Conscious and unconscious experiences do not belong to different compartments of the mind; they form a continuous scale of gradations, of degrees of awareness.

The principle that the end justifies the means is and remains the only rule of political ethics; anything else is just a vague chatter and melts away between one’s fingers.

One should either write ruthlessly what one believes to be the truth, or else shut up.

The 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.

A publisher who writes is like a cow in a milk bar.

You can't help people being right for the wrong reasons...This fear of finding oneself in bad company is not an expression of political purity; it is an expression of a lack of self-confidence.

Innovation is a twofold threat to academic mediocrities: it endangers their oracular authority, and it evokes the deeper fear that their whole, laboriously constructed intellectual edifice might collapse.