I was learning, as all young and inexperienced persons learn, by assimilation and imitation, to put ideas into words. Everything I found in books that pleased me I retained in my memory, consciously or unconsciously, and adapted it. The young writer, as Stevenson has said, instinctively tries to copy whatever seems most admirable, and he shifts his admiration with astonishing versatility. It is only after years of this sort of practice that even great men have learned to marshal the legion of words which come thronging through every byway of the mind. I am afraid I have not yet completed this process. It is certain that I cannot always distinguish my own thoughts from those I read, because what I read becomes the very substance and texture of my mind. […] But we keep on trying because we know that others have succeeded, and we are not willing to acknowledge defeat.