One should either write ruthlessly what one believes to be the truth, or else shut up.
Arthur KoestlerThe evolution of the brain not only overshot the needs of prehistoric man, it is the only example of evolution providing a species with an organ which it does not know how to use.
Arthur KoestlerTo sell oneself for thirty pieces of silver is an honest transaction; but to sell oneself to one s own conscience is to abandon mankind.
Arthur Koestler