It is in the admission of ignorance and the admission of uncertainty that there is a hope for the continuous motion of human beings in some direction that doesnt get confined, permanently blocked, as it has so many times before in various periods in the history of man. – Richard P. Feynman

Hence poetry is something more philosophic and of graver import than history, since its statements are rather of the nature of universals, whereas those of history are singulars. – Aristotle

Mankind has probably done more damage to the Earth in the 20th century than in all of previous human history. – Jacques Yves Cousteau