I believe that if, at the end, according to our abilities, we have done something to make others a little happier, and something to make ourselves a little happier, that is about the best we can do. To make others less happy is a crime. To make ourselves unhappy is where all crime starts. We must try to contribute joy to the world. That is true no matter what our problems, our health, our circumstances. We must try. I didn’t always know this and am happy I lived long enough to find it out.

Things, situations, people evolve constantly. Nothing is static.

To know thyself, as Shakespeare said.

It is necessary, I believe, to accept this idea, not only for science, but also for other things; it is of great value to acknowledge ignorance.  It is a fact that when we make decisions in our life we don't necessarily know that we are making them correctly; we only think that we are doing the best we can – and that is what we should do.

I just thought right away that I wanted to work. ... This is a good job. It's been a good job. Work is the most effective drug there can possibly be. ... I'm on the periphery of a lot of despair, of course. ... You'd have to be stupid not to be. I have my moments when I'm not too thrilled about this whole deal. But at the same time, the songs have never come like this, so I'd have to feel more gratitude than anything else. I'm probably in the intensest creative period of my life.

This is a lot harder for you than it is for me. If you had gone to bed as many nights as I did in the old days knowing that you had taken so much stuff that could kill you and not knowing if you would wake up, this is not as shocking as you think.

The songs aren't all written. ... You don't know where they're going to go. That's the fun of the job. There's the usual malarkey, the usual gags, the usual stuff. And also a few songs written by way of kind of being farewells to people, goodbyes to people, gratitude to people. Expressions of, you know, this was a nice deal, life. But I don't think it's exactly weighted with sentimentality.

Somebody who won't go to the doctor for a normal checkup is fearful and nervous. ... But once you find out what it's like on the other side, you can go beyond fear.