There are unknown forces in nature; when we give ourselves wholly to her, without reserve, she lends them to us; she shows us these forms, which our watching eyes do not see, which our intelligence does not understand or suspect.
真相很少纯粹,也绝不简单。
Man is by nature a reasonable being, but animals, other than man, are by nature instruments of brute force.
The most hateful thing for a man is to have knowledge of everything but power over nothing.
Sustainability isn't an option; it's a necessity for the future of our planet.