Intelligence is the ability to adapt to change.

The more skilled you are at something, the worse you are at it when showing someone.

Everybody is ignorant, only on different subjects.

Most of us have far more courage than we ever dreamed possible

I've learned that people will forget what you said, people will forget what you did, but people will never forget how you made them feel.

If we don't believe in freedom of expression for people we despise, we don't believe in it at all.

Accuracy is the twin brother of honesty; inaccuracy, of dishonesty.

If you don't know where you're from, you'll have a hard time saying where you're going.

Common sense is in spite of, not as the result of education.

Those who can not change their minds can not change anything.

I mistrust the judgement of every man in a case in which his own wishes are concerned.

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.

I've come to believe that all my past failure and frustration were actually laying the foundation for the understandings that have created the new level of living I now enjoy.

Admiration is the daughter of ignorance.

It is not the strength, but the duration, of great sentiments that makes great men.

Not everything that can be counted counts, and not everything that counts can be counted.

The wise man should restrain his senses like the crane and accomplish his purpose with due knowledge of his place, time and ability.

The first thing you'll have to do, is the last thing you wished.

Each problem that I solved became a rule which served afterwards to solve other problems.

We must live together as brothers or perish together as fools.

It is always advisable to perceive clearly our ignorance.