the four causes
Opere (8)
Aquinas
Aristotle
- Generation of Animals (715a)
- Metaphysics (980a)
- On Generation and Corruption (314a)
- Parts of Animals (639a)
- Physics (184a)
- Progression of Animals (704a)
Ortega y Gasset
the four causes
Aquinas
Aristotle
Ortega y Gasset