Courage is a special kind of knowledge: the knowledge of how to fear what ought to be feared and how not to fear what ought not to be feared

Courage is... the knowledge of how to fear what ought to be feared and how not to fear what ought not to be feared.

Courage is a special kind of knowledge: the knowledge of how to fear what ought to be feared and how not to fear what ought not to be feared.

Anyone who believes you can't change history has never tried to write his memoirs.

There's no shame in fear. But understand this - the coward is ruled by fear, while the hero rides it like a wild stallion.

The great Jewish scientists and philosophers of the last few generations - Spinoza, Einstein, Freud, Robert Oppenheimer and others - were natives of Europe and America.