Kenneth Clark said this quote

It would be unfair to say that I prefer the back of a book to its contents, but it is true that the sight of a lot of books gives me the hope that I may some day read them, which sometimes develops into the belief that I have read them.

~ Kenneth Clark

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—

What civilization needs:

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 civilisations—or civilising epochs—have had a weight of energy behind them. People sometimes think that civilisation consists in fine sensibilities and good conversations 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 and yet be dead and rigid.

~ Kenneth Clark

In the early twelfth century century the Virgin had been the supreme protectress of civilisation. She had taught a race of tough and ruthless barbarians the virtues of tenderness and compassion. The great cathedrals of the Middle Ages were her dwelling places upon earth. In the Renaissance, while remaining the Queen of Heaven, she became also the human mother in whom everyone could recognise qualities of warmth and love and approachability...The stabilising, comprehensive religions of the world, the religions which penetrate to every part of a man's being--in Egypt, India or China--gave the female principle of creation at least as much importance as the male, and wouldn't have taken seriously a philosophy that failed to include them both...It's a curious fact that theall-male religions have produced no religious imagery--in most cases have positively forbidden it. The great religious art of the world is deeply involved with the female principle.

~ Kenneth Clark

Opera, next to Gothic architecture, is one of the strangest inventions of Western man. It could not have been foreseen by any logical process.

~ Kenneth Clark