Mathematics is the only good metaphysics.

I've been meaning to read Kant's Groundwork of the Metaphysics of Morals.

Sami went to a metaphysical store.

While the easiest way in metaphysics is to condemn all metaphysics as nonsense, the easiest way in morals is to elevate the common practice of the community into a moral absolute.

He's studying metaphysics.

He studies metaphysics.

Religion is the metaphysics of the common people.

I was thrown out of college for cheating on the metaphysics exam; I looked into the soul of the boy sitting next to me.

Mathematics has not a foot to stand upon which is not purely metaphysical.

The exact meaning of metaphysics is controversial.