No society has ever yet been able to handle the temptations of technology to mastery, to waste, to exuberance, to exploration and exploitation... We have to learn to cherish this earth and cherish it as something that's fragile, that's only one, it's all we have... We have to use our scientific knowledge to correct the dangers that have come from science and technology.

Interest and proficiency in almost any one activity-swimming, boating, fishing, skiing, skating-breed interest in many more. Once someone discovers the delight of mastering one skill, however slightly, he is likely to try out not just one more, but a whole ensemble.

To demand that another love what one loves is tyranny enough, but to demand that another hate what one hates, is even worse.

in all cultures, human beings - in order to be human - must understand the nonhuman.

Our first and most pressing problem is how to do away with warfare as a method of solving conflicts between national groups within a society who have different views about how the society is to run.

For the human species to evolve, the conversation must deepen.

Our human situation no longer permits us to make armed dichotomies between those who are good and those who are evil, those who are right and those who are wrong. The first blow dealt to the enemy's children will sign the death warrant of our own.