Concern for man himself and his fate must always form the chief interest of all technical endeavors, concern for the great unsolved problems of the organization of labor and the distribution of goods-in order that the creations of our mind shall be a blessing and not a curse to mankind. Never forget this in the midst of your diagrams and equations.

Things you can get access to, you should never memorize.

Whoever is careless with the truth in small matters cannot be trusted in important affairs.

Learn from yesterday, live for today, hope for tomorrow. The important thing is not to stop questioning.

The real difficulty, the difficulty which has baffled the sages of all times, is rather this: how can we make our teaching so potent in the motional life of man, that its influence should withstand the pressure of the elemental psychic forces in the individual?

I have little patience with scientists who take a board of wood, look for its thinnest part, and drill a great number of holes where drilling is easy.

The most beautiful thing we can experience is the mysterious. It is the source of all true art and science.