Everyone knew it was impossible, until a fool who didn't know came along and did it.

Problems cannot be solved by thinking within the framework in which the problems were created.

The only source of knowledge is experience.

What I see in Nature is a grand design that we can understand only imperfectly, one with which a responsible person must look at with humility.

Do not grow old, no matter how long you live. Never cease to stand like curious children before the Great Mystery into which we were born.

This subject brings me to that vilest offspring of the herd mind -- the odious militia. The man who enjoys marching in line and file to the strains of music falls below my contempt; he received his great brain by mistake -- the spinal cord would have been amply sufficient. This heroism at command, this senseless violence, this accursed bombast of patriotism -- how intensely I despise them! War is low and despicable, and I had rather be smitten to shreds than participate in such doings.

There is no logical way to the discovery of these elemental laws. There is only the way of intuition, which is helped by a feeling for the order lying behind the appearance.