- The soul has five things that help humans get at truth: art, science, prudence, wisdom, and intellect.
- Aristotle explains that "scientific knowledge" is incontestable knowledge—stuff we take for granted and accept as truth.
- It "does not admit to being otherwise" and doesn't change.
- Scientific knowledge can be taught through demonstration, either through induction or syllogism.
- If we know the principles of something and they don't change, we have scientific knowledge.