Life is like riding a bicycle. To keep your balance you must keep moving.

There are only two ways to live your life. One is as though nothing is a miracle. The other is as though everything is a miracle.

If A is a success in life, then A equals x plus y plus z. Work is x; y is play; and z is keeping your mouth shut.

Only a life lived for others is a life worthwhile.

Not everything that counts can be counted, and not everything that can be counted counts. This was on a sign hanging in Einstein's office at Princeton, which is often quoted as a statement by him; research should be able to reveal whether or not it originated with Einstein.

A person starts to live when he can live outside himself.

Nothing will benefit human health and increase chances for survival of life on Earth as much as the evolution to a vegetarian diet.

One of the strongest motives that lead men to art and science is escape from everyday life with its painful crudity and hopeless dreariness, from the fetters of one's own ever-shifting desires. A finely tempered nature longs to escape from the personal life into the world of objective perception and thought.

What is the meaning of human life, or of organic life altogether? To answer this question at all implies a religion. Is there any sense then, you ask, in putting it? I answer, the man who regards his own life and that of his fellow creatures as meaningless is not merely unfortunate but almost disqualified for life.

The great moral teachers of humanity were, in a way, artistic geniuses in the art of living.

The further the spiritual evolution of mankind advances, the more certain it seems to me that the path to genuine religiosity does not lie through the fear of life, and the fear of death, and blind faith, but through striving after rational knowledge.

I am satisfied with the mystery of life's eternity and with a knowledge, a sense, of the marvelous structure of existence — as well as the humble attempt to understand even a tiny portion of the Reason that manifests itself in nature.

The most important human endeavor is the striving for morality in our actions. Our inner balance and even our very existence depend on it. Only morality in our actions can give beauty and dignity to life.

I have never looked upon ease and happiness as ends in themselves — such an ethical basis I call more proper for a herd of swine. The ideals which have lighted me on my way and time after time given me new courage to face life cheerfully, have been Truth, Goodness, and Beauty. Without the sense of fellowship with men of like mind, of preoccupation with the objective, the eternally unattainable in the field of art and scientific research, life would have seemed to me empty. The ordinary objects of human endeavour — property, outward success, luxury — have always seemed to me contemptible.

A hundred times every day I remind myself that my inner and outer life are based on the labors of other men, living and dead, and that I must exert myself in order to give in the same measure as I have received and am still receiving...