The important thing is not to stop questioning. Curiosity has its own reason for existing. One cannot help but be in awe when he contemplates the mysteries of eternity, of life, of the marvelous structure of reality. It is enough if one tries merely to comprehend a little of this mystery every day. Never lose a holy curiosity.

I have tried 99 times and have failed, but on the 100th time came success.

Personally, I experience the greatest degree of pleasure in having contact with works of art. They furnish me with happy feelings of an intensity that I cannot derive from other sources.

God does not play dice.

A ship is always safe at the shore - but that is NOT what it is built for.

As long as there are sovereign nations possessing great power, war is inevitable.

Those who have the privilege to know have the duty to act.