The artist... standing in the position of mediator between the world of his experience and the world of his dreams - 'a mediator, consequently gifted with twin faculties, a selective faculty and a reproductive faculty.' To equate these faculties was the secret of artistic success.
There is no success without sacrifice. If you succeed without sacrifice it is because someone has suffered before you. If you sacrifice without success it is because someone will succeed after.
The only true measure of success is the ratio between what we might have done and what we might have been on the one hand, and the thing we have made and the things we have made of ourselves on the other.