I believe that there never was a creator of a philosophical system who did not confess at the end of his life that he had wasted his time. It must be admitted that the inventors of the mechanical arts have been much more useful to men that the inventors of syllogisms. He who imagined a ship towers considerably above him who imagined innate ideas.
It is reported in the supplement of the council of Nicæan that the fathers, being very perplexed to know which were the cryphal or apocryphal books of the Old and New Testaments, put them all pell-mell on an altar, and the books to be rejected fell to the ground. It is a pity that this eloquent procedure has not survived.
I never approved either the errors of his book, or the trivial truths he so vigorously laid down. I have, however, stoutly taken his side when absurd men have condemned him for these same truths.
Descartes constructed as noble a road of science, from the point at which he found geometry to that to which he carried it, as Newton himself did after him. ... He carried this spirit of geometry and invention into optics, which under him became a completely new art.
Los Padres have everything and the people have nothing; 'tis the masterpiece of reason and justice. For my part, I know nothing so divine as Los Padres who make war on Kings of Spain and Portugal and in Europe act as their confessors; who here kill Spaniards and at Madrid send them to Heaven.
It is an infantile superstition of the human spirit that virginity would be thought a virtue and not the barrier that separates ignorance from knowledge.