There are four million different kinds of animals and plants in the world. That’s four million solutions to the problem of staying alive.

A man's feet should be planted in his country, but his eyes should survey the world.

Ever more people today have the means to live, but no meaning to live for.

One can choose to go back toward safety or forward toward growth. Growth must be chosen again and again; fear must be overcome again and again.

I just invent, then wait until man comes around to needing what I've invented.

A man is not rightly conditioned until he is a happy, healthy, and prosperous being; and happiness, health, and prosperity are the result of a harmonious adjustment of the inner with the outer of the man with his surroundings.

To live alone is the fate of all great souls.

When people are protecting something truly special to them, they truly can become...as strong as they can be.

Of mankind we may say in general they are fickle, hypocritical, and greedy of gain.

Humans are not proud of their ancestors, and rarely invite them round to dinner.

A person's a person, no matter how small.

The true measure of a man is how he treats someone who can do him absolutely no good.

Human history is in essence a history of ideas.

Build a man a fire, and he'll be warm for a day. Set a man on fire, and he'll be warm for the rest of his life.

These are people who are capable of devotion, public devotion, to justice. They meant what they said and every day that passes, they mean it more.

Everything that irritates us about others can lead us to an understanding of ourselves.

You climb to reach the summit, but once there, discover that all roads lead down.

There is no come back to caves. We are too many.

You may turn into an archangel, a fool, or a criminal ? no one will see it. But when a button is missing?everyone sees that.

The world would be happier if men had the same capacity to be silent that they have to speak.

A man's first care should be to avoid the reproaches of his own heart.