It is the beginning of wisdom when you recognize that the best you can do is choose which rules you want to live by, and it's persistent and aggravated imbecility to pretend you can live without any.

Fossil energy is the worst discovery man ever made, and his disruption of the carbon-oxygen cycle is the greatest of his triumphs over nature. Through thinner and thinner air we labor toward our last end, conquerors finally of even the earth chemistry that created us.

it is an easy mistake to think that non-talkers are non-feelers.

If you avoid the killer diseases and keep the degenerative ones under control with sensible diet and exercise and whatever chemotherapy you need to stay in balance, you can live nearly forever.

Wisdom. . .is knowing what you have to accept.

Largeness is a lifelong matter - sometimes a conscious goal, sometimes not. You enlarge yourself because that is the kind of individual you are. You grow because you are not content not to.

To try to save for everyone, for the hostile and independent as well as the committed, some of the health that flows down across the green ridges from the skyline, and some of the beauty and spirit that are still available to any resident of the valley who has a moment and the wit to lift up his eyes unto the hills.