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.

Man selects only for his own good: Nature only for that of the being which she tends.

Vitality and beauty are gifts of Nature for those who live according to its laws.

Experiment is the sole interpreter of the artifices of Nature.

Those who are inspired by a model other than Nature, labor in vain.