When you believe that you cannot stitch your own heart back together, go to work on the hearts of other people; there is no surer way to repair yourself than to repair them.

It is important not to suppress your feelings altogether when you are depressed. It is equally important to avoid terrible arguments or expressions of outrage. You should steer clear of emotionally damaging behavior. People forgive, but it is best not to stir things up to the point at which forgiveness is required. When you are depressed, you need the love of other people, and yet depression fosters actions that destroy that love. Depressed people often stick pins into their own life rafts. The conscious mind can intervene. One is not helpless.

Absence does not so much make the heart grow fonder as give the heart time to integrate what it has not previously absorbed, time to make sense of what happened too quickly to have any meaning in the instant. This is always true. If it is in absence that people forget each other, it is also in the quiet pause of absence that, minds running in symmetry, people come to know each other; there is sometimes as much intimacy in the span of continents as in the shared hours before dawn.

When you believe that you cannot stitch your own heart back together, go to work on the hearts of other people; there is no surer way to repair yourself than to repair them.

One of the things that often gets lost in discussions of depression is that you know it's ridiculous. You know it's ridiculous while you're experiencing it. You know that most people manage to listen to their messages, and eat lunch, and organise themselves to take a shower and go out the front door, and that it's not a big deal. And yet you are nonetheless in its grip and you are unable to figure out any way around it.

If some glorious angel suddenly descended through my living room ceiling and offered to take away the children I have and give me other, better children — more polite, funnier, nicer, smarter — I would cling to the children I have and pray away that atrocious spectacle.

I think morality is more important than ever before. As we gain more power, the question of what we do with it becomes more and more crucial, and we are very close to really having divine powers of creation and destruction. The future of the entire ecological system and the future of the whole of life is really now in our hands. And what to do with it is an ethical question and also a scientific question.