What am I?

• a body? (P 148a) -- No
• "a subtle air distributed through" the body? (P 230a; Cf. P 148ab) -- No
• "A thing which thinks." (P 230b) -- Yes (res cogitans)

"I am ... precisely only a thing that thinks, that is, a mind, or soul, or intellect, or reason ..." (P 148b)

"What is a thing which thinks? It is a thing which doubts, understands, [conceives], affirms, denies, wills, refuses, which also imagines and feels." (P 230b; Cf. P 149b)