Proof (n.) must not persuade but convince; otherwise the intelligence is taken in, not won over.
A Proof (n.) that demonstrates nothing need not be useless; it can still lay bare how the faculty that produced it works.
A Proof (n.) of the lawyer's kind wins by exploiting an opponent's carelessness and a misreading of the law, building one's own unjust case on refuting the other side.
Proof (n.) in metaphysics, without the guideline of possible experience, runs wild like water breaking its banks, wherever hidden association happens to lead it.
A Proof (n.) should not be believed without documents for a well-grounded deduction, not even the clearest dogmatic one — there are too many false presumptions of reason amplifying our cognition.
A Proof (n.) of the transcendental kind can only be one for each proposition, since it proceeds solely from one concept; mathematics, working from intuition, can reach the same theorem by many paths.