Nature has established patterns originating in the return of events, but only for the most part. New illnesses flood the human race, so that no matte… - Gottfried Wilhelm Leibniz

If you could blow the brain up to the size of a mill and walk about inside, you would not find consciousness.

There are two kinds of truths: those of reasoning and those of fact. The truths of reasoning are necessary and their opposite is impossible; the truths of fact are contingent and their opposites are possible.

It is unworthy of excellent men to lose hours like slaves in the labour of calculation which could safely be relegated to anyone else if machines were used.

(Describing, in 1685, the value to astronomers of the hand-cranked calculating machine he had invented in 1673.)