Imagination is the highest form of research.

It is true that my parents were worried because I began to speak relatively late, so much so that they consulted a doctor. I can’t say how old I was then, certainly not less than three.

That is the way to learn the most, that when you are doing something with such enjoyment that you don’t notice that the time passes.

Combinatory play seems to be the essential feature in productive thought.

Failure and deprivation are the best educators and purifiers.

Only one who devotes himself to a cause with his whole strength and soul can be a true master. For this reason mastery demands all of a person.

An awareness of my limitations pervades me all the more keenly in recent times because my faculties have been quite overrated since a few consequences of general relativity theory have stood the test.

The high destiny of the individual is to serve rather than to rule.

Wisdom is not a product of schooling but of the lifelong attempt to acquire it.

If the facts don’t fit the theory, change the facts.

You never fail until you stop trying.

Try not to become a man of success but rather to become a man of value.

The only source of knowledge is experience.

Don’t listen to the person who has the answers; listen to the person who has the questions.

The value of achievement lies in the achieving.

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

No better cosmetics than a severe temperance and purity, modesty and humility, a gracious temper and calmness of spirit; no true beauty without the signature of these graces in the very countenance.

You can take no credit for beauty at sixteen. But if you are beautiful at sixty, it will be your soul’s own doing.

There is certainly no absolute standard of beauty. That precisely is what makes its pursuit so interesting.

Take care of your inner, spiritual beauty. That will reflect in your face.

What you do, the way you think, makes you beautiful.

As we grow old, the beauty steals inward.

Nothing is more beautiful than the loveliness of the woods before sunrise.

Sometimes your joy is the source of your smile, but sometimes your smile can be the source of your joy.