Chief Seattle-
Man did not weave the web of life, he is merely a strand in it. Whatever he does to the web, he does to himself.

We have not inherited the earth from our ancestors, we have only borrowed it from our children.

Lao-Tzu (600 B.C.)
Water is fluid, soft, and yielding. But water will wear away rock, which is rigid and cannot yield. As a rule, whatever is fluid, soft, and yielding will overcome whatever is rigid and hard. This is another paradox: what is soft is strong.