Through [science] … the security and happiness of mankind are daily improved.

"Help us to be the always hopeful gardeners of the spirit, who know that without darkness, nothing comes to birth, as without light, nothing flowers."

"To me, every hour of the light and dark is a miracle. Every inch of space is a miracle."

Don't worry that your children never listen to you. Worry that your children are always watching you.

Darkness cannot drive out darkness; only light can do that.

Hatred cannot drive out hate; only love can do that.

Be not simply good. Be good for something.

There are two mistakes one can make along the road to truth: not going all the way, and not starting.

We pledge to walk together in the ways of truth and affection, as best we know them now or may learn them in the days to come, that we and our children may be fulfilled and that we may speak to the world in words and action of peace and goodwill.

The morning glory that blooms for an hour differs not at heart form the giant pine that lives for a thousand years.

They are sick that surfeit with too much, as they that starve with nothing.