Bright-minded young people think poorly of existing institutions and want to abolish them. Well, one doesn't need to be young to dislike institutions… - Kenneth Clark

It remains true that Michelangelo's intensely personal use of the nude greatly altered its character. He changed it from a means of embodying ideas to a means of expressing emotions; he transformed it from the world of living to the world of becoming. And he projected his world of the imagination with such unequaled artistic power that its shadow fell on every male nude in art for three hundred and fifty years. Painters either imitated his heroic poses and proportions or they reacted against them self-consciously and sought a new repertoire of attitudes in the art of fifth-century Greece. In the nineteenth century the ghost of Michelangelo was still posing the models in art schools.

What happened? It took Gibbon six volumes to describe the decline and fall of the Roman Empire, so I shan’t embark on that. But thinking about this almost incredible episode does tell one something about the nature of civilisation. It shows that however complex and solid it seems, it is actually quite fragile. It can be destroyed. What are its enemies? Well, first of all fear – fear of war, fear of invasion, fear of plague and famine, that make it simply not worthwhile constructing things, or planting trees or even planning next year’s crops. And fear of the supernatural, which means that you daren’t question anything or change anything. The late antique world was full of meaningless rituals, mystery religions, that destroyed self-confidence. And then exhaustion, the feeling of hopelessness which can overtake people even with a high degree of material prosperity. There is a poem by the modern Greek poet, Cavafy, in which he imagines the people of an antique town like Alexandria waiting every day for the barbarians to come and sack the city. Finally the barbarians move off somewhere else and the city is saved; but the people are disappointed – it would have been better than nothing. Of course, civilisation requires a modicum of material prosperity – enough to provide a little leisure. But, far more, it requires confidence – confidence in the society in which one lives, belief in its philosophy, belief in its laws, and confidence in one’s own mental powers. The way in which the stones of the Pont du Gard are laid is not only a triumph of technical skill, but shows a vigorous belief in law and discipline. Vigour, energy, vitality: all the great civilisations – or civilising epochs – have had a weight of energy behind them. People sometimes think that civilisation consists in fine sensibilities and good conversation and all that. These can be among the agreeable results of civilisation, but they are not what make a civilisation, and a society can have these amenities an

Conventional nudes based on classical originals could bear no burden of thought or inner life without losing their formal completeness.