We make war that we may live in peace.

The most perfect political community is one in which the middle class is in control, and outnumbers both of the other classes.

The one exclusive sign of thorough knowledge is the power of teaching.

The proof that you know something is that you are able to teach it.

The roots of education are bitter, but the fruit is sweet.

This is the reason why mothers are more devoted to their children than fathers: it is that they suffer more in giving them birth and are more certain that they are their own.

Those that know, do. Those that understand, teach.

Those who educate children well are more to be honored than they who produce them; for these only gave them life, those the art of living well.

Through discipline comes freedom.

To be conscious that we are perceiving or thinking is to be conscious of our own existence.

To the query, What is a friend? his reply was A single soul dwelling in two bodies.

To write well, express yourself like common people, but think like a wise man. Or, think as wise men do, but speak as the common people do.

We cannot learn without pain.

Wit is educated insolence.

It is the mark of an educated mind to be able to entertain a thought without accepting it.

The high-minded man must care more for the truth than for what people think.

Love is composed of single soul inhabiting two bodies.

To love someone is to identify with them.

Wicked men obey from fear; good men, from love.

A friend to all is a friend to none.

Friends hold a mirror up to each other; through that mirror they can see each other in ways that would not otherwise be accessible to them, and it is this mirroring that helps them improve themselves as persons.

Friendship is essentially a partnership.

Good habits formed at youth make all the difference.

Misfortune shows those who are not really friends.

Most people would rather give than get affection.

My best friend is the man who in wishing me well wishes it for my sake.

Piety requires us to honor truth above our friends.

The antidote for fifty enemies is one friend.

Wishing to be friends is quick work, but friendship is a slow-ripening fruit.

Wishing to be friends is quick work, but friendship is a slow ripening fruit.

A friend to all is a friend to none.

He who has overcome his fears will truly be free.

He who cannot be a good follower cannot be a good leader.

Fear is pain arising from the anticipation of evil.

It is of the nature of desire not to be satisfied, and most men live only for the gratification of it.

Happiness is activity.

Happiness is an expression of the soul in considered actions.

Happiness is the settling of the soul into its most appropriate spot.

Happiness depends upon ourselves.

Happiness is the meaning and the purpose of life, the whole aim and end of human existence.

Pleasure in the job puts perfection in the work.

Try again. Fail again. Fail better.

All my successes have been built on my failures.

Those who dare to fail miserably can achieve greatly.

Anyone who attempts is not a failure.

No man is defeated without until he has first been defeated within.

If we will be quiet and ready enough, we shall find compensation in every disappointment.  

I don’t believe in failure. It is not failure if you enjoyed the process.

Make new mistakes. Make glorious, amazing mistakes. Make mistakes nobody’s ever made before.

A man can’t ride your back unless it’s bent.