It was a decision to work clean. I just prefer to work that way. I have no problem with comedians who don't work that way. There was a temptation in the early '70s to reconsider. I decided against it.
Trees and flowers were often more meaningful to me than people. They always helped me, consoled me, giving the soul a chance to believe once more than the world was beautiful and sensible, that the mad absurdities and cruelties of men were against the laws of Nature and the Universal Mind; that sooner or later violence would suffer utter defeat on this Earth. No words collected in books were more effectively convincing to me than foliage, clouds, rippling waters, rain.