"There is one basis of science," says Descartes , "one test and rule of truth, namely, that whatever is clearly and distinctly conceived is true." A profound psychological mistake. It is true only of formal logic, wherein the mind never quits the sphere of its first assumptions to pass out into the sphere of real existences; no sooner does the mind pass from the internal order to the external order, than the necessity of verifying the strict correspondence between the two becomes absolute. The Ideal Test must be supplemented by the Real Test, to suit the new conditions of the problem.
He changes his opinions as he does his friends, and much on the same account. He has no comfort in fixed principles; as soon as anything is settled in his own mind, he quarrels with it. He has no satisfaction but the chase after truth, runs a question down, worries and kills it, then quits it like a vermin, and starts some new game, to lead him a new dance, and give him a fresh breathing through bog and brake, with the rabble yelping at his heels and the leaders perpetually at fault.william hazlitt
Love's ship has foundered on the rocks of life. We're quits: stupid to draw up a list of mutual sorrows, hurts and pains.vladimir mayakovsky