You must have chaos within you to give birth to a dancing star.
Friedrich Nietzsche

He who would learn to fly one day must first learn to stand and walk and run and climb and dance; one cannot fly into flying.
Friedrich Nietzsche

To use the same words is not a sufficient guarantee of understanding; one must use the same words for the same genus of inward experience; ultimately one must have one's experiences in common.
Friedrich Nietzsche

Women can form a friendship with a man very well; but to preserve it - to that end a slight physical antipathy must probably help.
Friedrich Nietzsche

Sleeping is no mean art: for its sake one must stay awake all day.
Friedrich Nietzsche

Experience, as a desire for experience, does not come off. We must not study ourselves while having an experience.
Friedrich Nietzsche

The man of knowledge must be able not only to love his enemies but also to hate his friends.
Friedrich Nietzsche

They must often change, who would be constant in happiness or wisdom.
Confucius

No matter how busy you may think you are, you must find time for reading, or surrender yourself to self-chosen ignorance.
Confucius

The expectations of life depend upon diligence; the mechanic that would perfect his work must first sharpen his tools.
Confucius

If all misfortunes were laid in one common heap whence everyone must take an equal portion, most people would be contented to take their own and depart.
Socrates

You see, antiquated ideas of kindness and generosity are simply bugs that must be programmed out of our world. And these cold, unfeeling machines will show us the way.
Bill Gates

The best and most beautiful things in the world cannot be seen or even touched - they must be felt with the heart.
Helen Keller

The most beautiful things in the world cannot be seen or even touched, they must be felt with the heart.
Helen Keller

People do not like to think. If one thinks, one must reach conclusions. Conclusions are not always pleasant.
Helen Keller

Of all the senses, sight must be the most delightful.
Helen Keller

Life is a succession of lessons which must be lived to be understood.
Helen Keller

A slender acquaintance with the world must convince every man that actions, not words, are the true criterion of the attachment of friends.
George Washington

If we desire to avoid insult, we must be able to repel it; if we desire to secure peace, one of the most powerful instruments of our rising prosperity, it must be known, that we are at all times ready for War.
George Washington

Friendship is a plant of slow growth and must undergo and withstand the shocks of adversity before it is entitled to the appellation.
George Washington