Passage
Aristotle, Metaphysics book 11 (DIORISIS sentence 2850)
grc aristotle metaphysics
τὰ μὲν οὖν εἴδη ὅτι οὐκ ἔστι, δῆλον ʼὅμως δὲ ἀπορίαν ἔχει, κἂν εἶναί τις αὐτὰ θῇ, διὰ τί ποτʼ οὐχ ὥσπερ ἐπὶ τῶν μαθηματικῶν, οὕτως ἔχει καὶ ἐπὶ τῶν ἄλλων ὧν ἔστιν εἴδη: