So I should say that civilizations begin with religion and stoicism: they end with scepticism and unbelief, and the undisciplined pursuit of individual pleasure. A civilization is born stoic and dies epicurean.
We are all afraid - for our confidence, for the future, for the world. That is the nature of the human imagination. Yet every man, every civilization, has gone forward because of its engagement with what it has set itself to do. The personal commitment and the emotional commitment working together as one, has made the Ascent of Man.
We sit by and watch the barbarian. We tolerate him in the long stretches of peace, we are not afraid. We are tickled by his irreverence; his comic inversion of our old certitudes and our fixed creed refreshes us; we laugh. But as we laugh we are watched by large and awful faces from beyond, and on these faces there are no smiles.
A race preserves its vigour so long as it harbours a real contrast between what has been and what may be, and so long as it is nerved by the vigour to adventure beyond the safeties of the past. Without adventure, civilization is in full decay.