Those living in the country succeeded largely by self-help. Many skills were common knowledge, augmented by advice and help from the more experienced. If your roof was leaky, then you didn’t normally call in a roofing specialist, but repaired it yourself with the aid of family and friends.

It’s unlikely that the people working on the thatched roof of James Ward’s Overshot Mill (1802-1807) were specialist thatchers, whose services could only be afforded by the more wealthy.

Most tools were simple in design and construction, and rustic. Sharpening the blade of a heavy scythe used for mowing was performed by beating it with a hammer, as shown in Léon Augustin Lhermitte’s painting of The Haymakers from 1887. Finer blades were normally brought to a keen edge using a whetstone.

Working in iron and other metals required not only specialist skills but equipment possessed by the local blacksmith, who made and fitted shoes on horses, put rims on wooden wheels, and fashioned iron hinges for doors.

Francisco Goya’s Forge from 1817 is a superb depiction of the physically demanding work of the blacksmith. Its extensive use of black is also a herald of the Black Period to come in Goya’s paintings at the end of that decade.

These had changed little in the latter years of the nineteenth century, as seen in Alfred Sisley’s Forge at Marly-le-Roi from 1875, although a little more light is being cast in through its glass window.

Ernst Josephson’s Spanish Blacksmiths from 1882 shows a smith in the shredded remains of his white shirt, and his ‘striker’ to the right in his black waistcoat, with a horseshoe hanging below the roof of their forge in Seville.

Döme Skuteczky’s painting In the Smithy from 1897 shows another smithy, this time in Slovakia.

With the industrial revolution, hammers grew too large to be wielded by a man, and relied on first water- then steam-power. Joseph Wright of Derby’s An Iron Forge (1772) is one of his series of faithful portrayals of the small-scale technological advances of the day. It shows a group of workers forging a white-hot iron casting, using a tilt-hammer powered by a water-wheel. Also present is the wife and children of the iron-founder, stressing the family nature of these small forges at the time.

Not all metal-working was heavy and large-scale. Jean-Eugène Buland uses his Naturalist style to depict The Tinker (1908), who repaired damaged pots, pans, and domestic metal objects in a cottage industry that predated the Industrial Revolution.

Sage and wise people are harder to distinguish visually, without using the cliché of the white-haired and bearded figure more commonly seen as Father Time. To the Romans, the personification of Wisdom was the goddess Minerva or Athena, whose complex background proved a challenge for painters.

Hendrik Goltzius shows a classical and fairly complete set of her attributes: the owl, her distinctive helmet here decorated with olive leaves, a spear, books, a writing quill, and great beauty.

Athena may go back to an even earlier Mycenean goddess. In archaic images, she’s often seen with an owl perched on her hand, and there is a suggestion that she may have originally been a bird goddess, nearly two thousand years BCE. Whatever the origins, there’s no doubt that Athena then Minerva were goddesses of wisdom, learning, crafts, and skill, and that they were strongly associated with owls, who became proxies for wisdom and knowledge. Minerva of the Romans also had Etruscan influences that determined her name in the goddess of war Menrva, with origins from an Italic moon goddess of similar name, hence her helmet and spear.

Solon was a key figure in the development of classical Greek civilisation, most significantly for laying down the tables of law for Athens, and best known for his legendary involvement with Croesus, the fabulously rich king whose name endures in English and other languages in the phrase as rich as Croesus.

Gaspar van den Hoecke’s Croesus Showing his Treasures to Solon is one of several similar paintings made in about 1635, presumably from a common source; others attributed to Cornelis de Vos and Frans Francken II survive. Here Croesus at the right is showing the bald and bearded Solon one of his treasure chambers. Troops in the background may refer to Croesus’ imminent fate at the hands of Cyrus and his Persian forces.

Accounts of wisdom in the Old Testament are generally focussed on the judgement skills of King Solomon, as displayed when he was called to settle a dispute between two women claiming to be the mother of one baby. Solomon commanded that the infant should be cleaved in two by a sword, leading to the real mother relinquishing her claim to the child, to ensure its survival.

Nicolas Poussin’s famous painting of The Judgement of Solomon from 1649 is timed slightly before the sword is raised, and depicts the body language clearly. Solomon’s hands indicate his role as the arbiter, in showing a fair balance between the two sides. The true mother, on the left, holds her left hand up to tell the soldier to stop and spare the infant. Her right hand is extended towards the false mother, indicating that she has asked for the baby to go to her rather than die. The false mother points accusingly at the child, her expression full of hatred. Hands are also raised in the group at the right, suggesting reactions to Solomon’s judgement. Without knowing the story well, though, there are no visual cues to suggest this young king is exceptionally wise.

This panel attributed to Giorgione and dated around 1505 mirrors the composition of his Trial of Moses (c 1496-9), to which it might have been a pendant. Solomon is shown in advanced age, thus inherently wise, commanding a courtier who has raised his short sword ready. The two women straddle the midline of the panel, their body language not clear enough to indicate who is the true mother.

More problematic still are visual accounts of the adoration of the Magi, three ‘wise men’ who are drawn by their observations of a comet to pay homage to the infant Jesus. Most take the easy option of depicting them as three kings, and only a few show them as pioneering astronomers.

Giotto’s frescoes in the Scrovegni Chapel at Padua, Italy, show a more elaborate depiction of The Adoration of the Magi (c 1305). The infant Christ rests on the Virgin Mary’s knee; she was originally clad in her signature ultramarine blue, but that has worn away with the years. Mary is accompanied by Joseph and an angel, and the Holy Family is within a wooden shed. The three Magi pay their respects and present their gifts, accompanied by camels and at least two attendants. The comet that attracted their attention is shown as a fireball crossing the sky.

Diego Velázquez broke with tradition in his Adoration of the Magi from 1619 in depicting the figures as real humans rather than idealised models. He had to be careful to maintain distinct appearances for those such as Mary and Jesus who are divine, even covering the Virgin’s feet for the sake of propriety. But the other figures here all look to be real, living and breathing people, and the Magi for once aren’t visual clichés.

With the Age of Enlightenment, paintings came to include the most enlightened in more innovative ways, as ‘philosophers’, particularly in the chiaroscuro images of Joseph Wright of Derby.

In 1766, Wright exhibited one of his most enduring images of the period, A Philosopher Giving that Lecture on the Orrery, in which a Lamp is Put in Place of the Sun. The orrery, a miniature planetarium showing the movements of the planets and their moons, was an impressive high-end Grand Orrery, an expensive device that would undoubtedly have captivated the minds of those able to gaze at it.

There are numerous cues here to different narratives: to Locke’s educational theories with their emphasis on geography, understanding of astronomy, and Newton’s gravitation and mechanics. It has been proposed that the philosopher in the red gown is modelled on Isaac Newton, and the figure at the left taking notes is Wright’s friend Peter Perez Burdett.

In the nineteenth century, wisdom was strongly associated with science and technology, and the equipment used.

Joaquín Sorolla’s Portrait of Dr. Simarro at the Microscope from 1897 shows Doctor Luis Simarro Lacabra (1851-1921), who was an eminent psychiatrist in Madrid, and undertook pioneering research looking at the fine structure of the brain. Among his many achievements was a modification of an established technique for staining microscopic sections of brain, which proved a major advance and an inspiration to the great Spanish neurohistologist Ramon y Cajal. He is shown here with one of the most popular scientific instruments associated with knowledge and wisdom, the microscope.

Few artists have ever gathered as many of the great and wise as Raphael, in his large fresco of The School of Athens, painted between about 1509-10.

This wasn’t recognised as depicting eminent Greek philosophers until 1695, with Vasari’s account in his biography of Raphael assuming that it included a group of evangelists, and others claiming the figures are taken from Dante’s Divine Comedy.

This assorted collection of Greek philosophers, with a few extras, are chatting, teaching, and generally loafing about in an impressive building of grand classical style that is probably Raphael’s extended fantasy based on the contemporary architecture of Bramante. Although there’s no coherent narrative, it contains numerous diverting scenes in which the viewer is challenged to recognise the participants.

The central figures are Plato (left), who carries in his left hand a book titled TIMEO, and Aristotle (right), whose book bears the word ETICA. Seen further to the left in profile is Socrates, and below him is Pythagoras, who is writing in a book while a boy holds in front of him a small blackboard showing the theory of harmony.

His opposite number on the right is Euclid, who is bent over and holding a pair of compasses in his right hand. Behind him are Ptolemy, who is holding a globe and facing away, and Zoroaster, who holds a celestial sphere with his right hand. One striking figure for which I haven’t seen any plausible identification is the woman behind Pythagoras, who appears to have just walked out of Leonardo da Vinci’s Mona Lisa.