We are tempted to believe that certain achievements and possessions will give us enduring satisfaction. We are invited to imagine ourselves scaling the steep cliff face of happiness in order to reach a wide, high plateau on which we will live out the rest of our lives; we are not reminded that soon after gaining the summit, we will be called down again into fresh lowlands of anxiety and desire.

Wealth is not an absolute. It is relative to desire. Every time we yearn for something we cannot afford, we grow poorer, whatever our resources. And every time we feel satisfied with what we have, we can be counted as rich, however little we may actually possess.

We wanted to test each other's capacity for survival: only if we had tried in vain to destroy one another would we know we were safe.

Our sadness won’t be of the searing kind but more like a blend of joy and melancholy: joy at the perfection we see before us, melancholy at an awareness of how seldom we are sufficiently blessed to encounter anything of its kind. The flawless object throws into perspective the mediocrity that surrounds it. We are reminded of the way we would wish things always to be and of how incomplete our lives remain.

Although I don't believe in God, Bach's music shows me what a love of God must feel like.

What kills us isn't one big thing, but thousands of tiny obligations we can't turn down for fear of disappointing others.

Differ though we might with Christianity's view of what precisely our souls need, it is hard to discredit the provocative underlying thesis, which seems no less relevant in the secular realm than in the religious one-that we have within us a precious, childlike, vulnerable core which we should nourish and nurture on its turbulent journey through life.