The painter must give a completely free rein to any feeling or sensations he may have and reject nothing to which he is naturally drawn.

I remember Francis Bacon would say that he felt he was giving art what he thought it previously lacked. With me, it's what Yeats called the fascination with what's difficult. I'm only trying to do what I can't do.

The character of the artist doesn't enter into the nature of the art

A moment of complete happiness never occurs in the creation of a work of art. The promise of it is felt in the act of creation but disappears towards the completion of the work. For it is then the painter realises that it is only a picture he is painting. Until then he had almost dared to hope the picture might spring to life.