Nature appears to have been the cruel stepmother rather than the mother of many animals.

I'm not into organized religion. I'm into believing in a higher source of creation, realizing we're all just part of nature.

Necessity is the mistress and guide of nature.

Nature knows no indecencies; man invents them.

I abhor the supreme folly of those who blame the disciples of nature in defiance of those masters who were themselves her pupils.

A heightened sense of the observation of nature is one of the chief delights that have come to me through trying to paint. I accumulated in those years so fine a surplus in the Book of Observance that I have been drawing confidently upon it ever since.