The first flower that blossomed on this earth was an invitation to an unborn song.

Dark clouds become heaven's flowers when kissed by light.

He who is not content to look, like a savage, at the phenomena of nature as disconnected, cannot any longer believe that man is the work of a separate act of creation ... Man is the co-descendant with other mammals of a common progenitor.

Look deep into nature, and then you will understand everything better.

Nature knows no indecencies; man invents them.

I do not see why man should not be just as cruel as nature.