From Wikipedia:

• οὐκ ἂν ἐποίησεν ταῦτα, εἰ μὴ ἐγὼ αὐτὸν ἐκέλευσα. – He would not have done this, if I had not ordered him.
• ἀκηκόατε, ἑωράκατε· δικάζετε. – You have heard, you have seen; make your decision.
• ὑμεῖς ἐμοῦ πολλάκις ἀκηκόατε λέγοντος. – You have often heard me speaking.
• ἡ στήλη παρ’ ᾗ ἕστηκας χιλίᾱς δραχμᾱ̀ς κελεύει ὀφείλειν. – The inscribed stone beside which you are standing orders that you owe 1000 drachmas.