I should like to know which is worse: to be ravished a hundred times by pirates, and have a buttock cut off, and run the gauntlet of the Bulgarians, and be flogged and hanged in an auto-da-fe, and be dissected, and have to row in a galley -- in short, to undergo all the miseries we have each of us suffered -- or simply to sit here and do nothing?' That is a hard question,' said Candide.
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.
If God did not exist, it would be necessary to invent him; let us worship God through Jesus if we must - if ignorance has so far prevailed that this name can still be spoken in all seriousness without being taken as a synonym for rapine and carnage. Every sensible man, every honourable man, must hold the Christian sect in horror.
It is not enough to be exceptionally mad, licentious and fanatical in order to win a great reputation; it is still necessary to arrive on the scene at the right time.
People must have renounced, it seems to me, all natural intelligence to dare to advance that animals are but animated machines.... It appears to me, besides, that such people can never have observed with attention the character of animals, not to have distinguished among them the different voices of need, of suffering, of joy, of pain, of love, of anger, and of all their affections. It would be very strange that they should express so well what they could not feel.