The oldest, shortest words- 'yes' and 'no'- are those which require the most thought.

No man has any natural authority over his fellow men.

In the midst of movement and chaos, keep stillness inside of you.

Throw your heart over the fence and the rest will follow.

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

The path to success is to take massive, determined action.

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.

Destiny is not a passive agent that lies in the lap of the Gods, but is an active instrument that lies in your own hands to shape as you will.

A single lie destroys a whole reputation of integrity.

Simplicity is the ultimate sophistication.

All our knowledge begins with the senses, proceeds then to the understanding, and ends with reason. There is nothing higher than reason.

Drop the idea of becoming someone, because you are already a masterpiece. You cannot be improved. You have only to come to it, to know it, to realize it.

Do not pray for an easy life, pray for the strength to endure a difficult one.

Moderation in temper is always a virtue; but moderation in principle is always a vice.

To be wronged is nothing unless you continue to remember it.

The ethos of redemption is realized in self-mastery, by means of temperance, that is, continence of desires.

Convictions are more dangerous enemies of truth than lies.

Mistakes are always forgivable, if one has the courage to admit them.

An understanding of the natural world is a source of not only great curiosity, but great fulfilment.

The absent are never without fault, nor the present without excuse.

Rational discussion is useful only when there is a significant base of shared assumptions.