Life is like a bicycle; keep moving on to maintain balance.

Nationalism is the measels of mankind.

We must remember that we do not observe nature as it actually exists, but nature exposed to our methods of perception. The theories determine what we can or cannot observe...Reality is an illusion, albeit a persistent one.

The significant problems we have cannot be solved at the same level of thinking with which we created them.

Without changing our pattern of thought, we will not be able to solve the problems we created with our current patterns of thought

The facts, although interesting, are irrelevant.

An autocratic system of coercion, in my opinion, soon degenerates. For force always attracts men of low morality, and I believe it to be an invariable rule that tyrants of genius are succeeded by scoundrels. For this reason I have always been passionately opposed to systems such as we see in Italy and Russia to-day.