“All that I have produced before the age of seventy is not worth taking into account. At seventy-three, I learned a little about the real structure of nature, of animals, plants, trees, birds, fishes and insects. In consequence, when I am eighty, I shall have made still more progress. At ninety, I shall penetrate the mystery of things; at 100, I shall certainly have reached a marvelous stage; and when I am 110, everything I do, be it a dot or a line, will be alive.”
Hokusai, A Hundred Views of Fuji