A man may imagine things that are false, but he can only understand things that are true.
Learn from the mistakes of others. You can never live long enough to make them all yourself.
Yesterday is but today's memory and tomorrow is today's dream.
Loneliness adds beauty to life. It puts a special burn on sunsets and makes night air smell better.
To live is not merely to breathe; it is to act; it is to make use of our organs, senses, faculties - of all those parts of ourselves which give us the feeling of existence
Tact is the knack of making a point without making an enemy.
Experience is the only prophecy of wise men.
The more that you read, the more things you will know. The more that you learn, the more places you'll go.
Man's sensitivity to the little things and insensitivity to the greatest are the signs of a strange disorder.
If we can really understand the problem, the answer will come out of it, because the answer is not separate from the problem.
Just remember, once you're over the hill you begin to pick up speed.
Throw your heart over the fence and the rest will follow.
Everything excellent is as difficult as it is rare.
Do not pray for an easy life, pray for the strength to endure a difficult one.
Be frank and explicit. That is the right line to take when you wish to conceal your own mind and to confuse the minds of others.
Take care of the pieces well. The whole will take care of itself.
Judge a man by his questions rather than by his answers.
It has seemed to be more necessary to have regard to the weight of words rather than to their number.
It seems essential, in relationships and all tasks, that we concentrate only on what is most significant and important.
Medicine heals diseases of the body, wisdom frees the soul from passions.
Knowing is not enough, we must apply. Willing is not enough, we must do.