The ultimate truth is penultimately always a falsehood. He who will be proved right in the end appears to be wrong and harmful before it.

Some of the greatest discoveries...consist mainly in the clearing away of psychological roadblocks which obstruct the approach to reality; which is why,post factum they appear so obvious.

Man's destiny was no longer determined from 'above' by a super-human wisdom and will, but from 'below' by the sub-human agencies of glands, genes, atoms, or waves of probability. ...they could determine his fate, but could provide him with no moral guidance, no values and meaning. A puppet of the Gods is a tragic figure, a puppet suspended on his chromosomes is merely grotesque.

Two half-truths do not make a truth, and two half- cultures do not make a culture

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.

Faith is a wondrous thing; it is not only capable of moving mountains, but also of making you believe that a herring is a race horse.

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.