Disagreed with his teacher - Plato. Said there
aren't 2 separate realms.
The world we live in is the place where we can have
true knowledge.
We come to understand things through
sense experience.
He rejected Plato's Theory of the Forms and said
the world is made of matter.
The Four
Causes
1. Material Cause: what something's
made of, the matter/substance it's made
of e.g. a book is made from paper
2. Formal Cause: what its characteristics are,
what gives the matter its form or structure.
3. Efficient Cause: its reason for
existing, how itcomes to exist, the
creator of it.
4. Final Cause: its use, the reason
it is the way it is, its function.
Example - a statue: 1. marble 2.
shape of a statue 3. a mason made
it 4. to honour or remember
someone
Potentiality +
Actuality
Potentiality = matter has the potential to acquire its final form/telos
Everything has a purpose/telos
Potentiality is
actualised by motion
Example: a tadpole has the potentiality to
become a frog. The process of change
(motion) from tadpole to frog is 'actualisation'.
The telos of a tadpole is to become a frog.
Telos can be frustrated e.g. a
tadpole could be eaten by a heron