4 ideas
9807 | In pursuing truth, anything less certain than mathematics is a waste of time [Descartes] |
5987 | Alcmaeon was the first to say the brain is central to thinking [Alcmaeon, by Staden, von] |
21994 | The handmill gives feudalism, the steam mill capitalism [Marx] |
24043 | Soul must be immortal, since it continually moves, like the heavens [Alcmaeon, by Aristotle] |