He who is involved in ecstasies and visions, who takes dreams for reality, and his own imagination for prophesy, is a fanatical novice of great hope and promise, and will soon advance to the higher stage and kill men for the love of God.
All events are linked together in the best of possible worlds; after all, if you had not been driven from a fine castle by being kicked in the backside for love of Miss Cunegonde, if you hadn't been sent before the Inquisition, if you hadn't traveled across America on foot, if you hadn't given a good sword thrust to the baron, if you hadn't lost all your sheep from the good land of Eldorado, you wouldn't be sitting here eating candied citron and pistachios. - That is very well put, said Candide, but we must cultivate our garden.
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.
We are going to a new world... and no doubt it is there that everything is for the best; for it must be admitted that one might lament a little over the physical and moral happenings of our own world.