To be human and to be adult means constantly to be in the grip of opposing emotions, to have daily to reconcile apparently conflicting tensions. I want this, but need that. I cherish this, but I adore its opposite too.

I have written it before and am not ashamed to write it again. Without Wodehouse I am not sure that I would be a tenth of what I am today -- whatever that may be. In my teenage years, his writings awoke me to the possibilities of language. His rhythms, tropes, tricks and mannerisms are deep within me. But more than that, he taught me something about good nature. It is enough to be benign, to be gentle, to be funny, to be kind.

They are just 100 per cent bear, whereas human beings feel we're not 100 per cent human, that we're always letting ourselves down. We're constantly striving towards something, to some fulfilment.

The most important philosophy I think is that even if it isn't true you must absolutely assume there is no afterlife.

It's rather splendid to think of all those great men and women who appear to have presented symptoms that allow us to describe them as bipolar. Whether it's Hemingway, Van Gogh... Robert Schumann has been mentioned... Virginia Woolf, Sylvia Plath... some of them with rather grim ends.

No, I love the idea that someone changes. As an actor it's always the thing that you look for. He is someone who starts off bright, cheerful and confident and then has everything taken away from him. It's a wonderful journey to take.

You'll often hear the phrase "science doesn't know everything." Well, of course it doesn't know everything. But just because science doesn't know everything doesn't mean that it knows nothing.