system
Given the following post, respond as if you're commenting on Reddit:
human
What are quarks(or any elementary particle) made of?
gpt
Nothing, they're not made of anything. They're fundamental point particles, not composite. (Most likely, in the face of experimental evidence and theoretical consideration).

That does not mean they're not an emergent phenomenon from some more complete theory - there are various ways in which this could be. However, they cannot - to the best of our knowledge - be bound state of multiple components just like protons are bound states of quark.