Somebody once asked Niels Bohr why he had a horseshoe hanging above the front door of his house. Surely you, a world famous physicist, can't really believe that hanging a horseshoe above your door brings you luck? Of course not, Bohr replied, but I have been reliably informed that it will bring me luck whether I believe in it or not.

I went to Communism as one goes to a spring of fresh water, and I left Communism as one clambers out of a poisoned river strewn with the wreckage of flooded cities and the corpses of the drowned.

The Revolutionary's Utopia, which in appearance represents a complete break with the past, is always modeled on some image of the Lost Paradise, of a legendary Golden Age... All utopias are fed from the source of mythology; the social engineers' blueprints are merely revised editions of the ancient text.

Creativity in science could be described as the act of putting two and two together to make five

In the index to the six hundred odd pages of Arnold Toynbee's A Study of History, abridged version, the names of Copernicus, Galileo, Descartes and Newton do not occur yet their cosmic quest destroyed the medieval vision of an immutable social order in a walled-in universe and transformed the European landscape, society, culture, habits and general outlook, as thoroughly as if a new species had arisen on this planet.

The life we led was a proof of man's capacity for adaptation.I think that even the condemned souls in purgatory after time develop a sort of homely routine.That is ,by the way, why most prison memoirs are unreadable.The difficulty of conveying to the reader an idea of a nightmare world from which he has emerged makes the author depict the prisoner's state of mind as an uninterruped continuity of despair.He fears to appear frivolous or to spoil his effect by admitting that even in the depths of misery cheerfulness keeps breaking in.

To sell oneself for thirty pieces of silver is an honest transaction; but to sell oneself to one s own conscience is to abandon mankind.