I read these words which are the sum of all moral philosophy, and which cut short all the disputes of the casuists: When in doubt if an action is good or bad, refrain.
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.
The Pride of every Jew finds cause to believe that the cause of their down fall is not their detestable politics, or ignorance of social graces, but the raft of God. They believe it took a miracle to undo them.
"I have no more than twenty acres of ground," he replied, "the whole of which I cultivate myself with the help of my children; and our labor keeps off from us the three great evils - boredom, vice, and want."