My '60s plays were as good as most of the other plays I've written ... except I wasn't in a condition to refine them, to help in the rehearsal, or do anything. I was hardly conscious of what was going on except during the hours of the day when I was actually writing ... and that was with the aid of speed.

Show me a person who hasn´t known any sorrow and I´ll show you a superficial.

Success is blocked by concentrating on it and planning for it... Success is shy - it won't come out while you're watching.

Don't you think there is always something unspoken between two people?

The mountain violets break the rocks.

We are all civilized people, wich means that we are all savages at heart but observing a few amenities of civilized behaviour.

I have always been pushed by the negative. The apparent failure of a play sends me back to my typewriter that very night, before the reviews are out. I am more compelled to get back to work than if I had a success.