“The important thing is not to stop questioning; curiosity has its own reason for existing.”

Imagination is more important than knowledge. For while knowledge defines all we currently know and understand, imagination points to all we might yet discover and create.

Once we accept our limits, we go beyond them.

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

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

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

If A is success in life, then A equals x plus y plus z. Work is x; y is play; and z is keeping your mouth shut.

Feeling and longing are the motive forces behind all human endeavor and human creations.