Bitterness is like cancer. It eats upon the host. But anger is like fire. It burns it all clean.

Things which matter most must never be at the mercy of things which matter least.

It takes a great man to be a good listener.

But the fact that some geniuses were laughed at does not imply that all who are laughed at are geniuses. They laughed at Columbus, they laughed at Fulton, they laughed at the Wright brothers. But they also laughed at Bozo the Clown.

Wonder is the beginning of wisdom.

Compassion is the basis of morality.

No man has any natural authority over his fellow men.

If you would take, you must first give, this is the beginning of intelligence.

Wrong life cannot be lived rightly.

Nature is pleased with simplicity. And nature is no dummy

He who is slowest in making a promise is most faithful in its performance.

None but ourselves can free our minds.

Work is the price which is paid for reputation.

So many people have this idea: I want to achieve something great or be somebody great. And they neglect the step that leads to greatness. They don't honor this step at this moment because they have this idea of some future moment where they are going to be great.

Don't expect to build up the weak by pulling down the strong.

Each day is a little life; every waking and rising a little birth; every fresh morning a little youth; every going to rest and sleep a little death.

Challenges are gifts that force us to search for a new center of gravity. Don't fight them. Just find a new way to stand.

If we do not lay out ourselves in the service of mankind whom should we serve?

Energy may be likened to the bending of a crossbow; decision,to the releasing of a trigger.

Drop the idea that you are Atlas carrying the world on your shoulders. The world would go on even without you. Don't take yourself so seriously.

There are things known and there are things unknown, and in between are the doors of perception.