“A human being is a part of the whole called by us universe, a part limited in time and space.”

Peace cannot be kept by force. It can only be achieved by understanding.

Logic will get you from A to B. Imagination will take you everywhere.

In the middle of every difficulty lies opportunity.

Reality is merely an illusion, albeit a very persistent one.

I never think of the future. It comes soon enough.

Setting an example is not the main means of influencing another, it is the only means.

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