Do not look for approval except for the consciousness of doing your best.

I confess that in 1901 I said to my brother Orville that man would not fly for fifty years.

To See a World in a Grain of Sand And a Heaven in a Wild Flower, Hold Infinity in the palm of your hand And Eternity in an hour.

Drink moderately, for drunkenness neither keeps a secret nor observes a promise.

Aim for the highest.

Patience is bitter, but its fruit is sweet.

People throw stones at you and you convert them into milestones.

There are only 3 colors, 10 digits, and 7 notes; its what we do with them that's important.

It marks a big step in your development when you come to realize that other people can help you do a better job than you could do alone.

The time is always right to do the right thing

If you put off everything till you're sure of it, you'll never get anything done.

Look up at the stars and not down at your feet. Try to make sense of what you see, and wonder about what makes the universe exist. Be curious.

No leader can be too far ahead of his followers.

Insanity is doing the same thing over and over again and expecting different results.

Courage is the thing. All goes if courage goes.

You'll never do a whole lot unless you're brave enough to try.

People who are unable to motivate themselves must be content with mediocrity, no matter how impressive their other talents.

To succeed in your mission, you must have single-minded devotion to your goal.

Fantasy is an exercise bicycle for the mind. It might not take you anywhere, but it tones up the muscles that can. Of course, I could be wrong.

It is greed to do all the talking but not to want to listen at all.

Anyone who stops learning is old, whether at twenty or eighty. Anyone who keeps learning stays young.