Molière
The Imaginary Invalid (Act 3 Scene 13)
SCENE XIII.——ARGAN, BÉRALDE.

ARG.
Had I not seen them both together, I should have believed it was one and the same person.

BER.
I have read wonderful stories about such resemblances; and we have seen some in our day that have taken in everybody.

ARG.
For my part, I should have been deceived this time, and sworn that the two were but one.