Английский словарь американских идиом - see the light

{v. phr.}, {informal} To understand or agree, often suddenly; accept another's explanation or decision. * /I did not approve of his action, but he explained his reason and then I saw the light./ * /Bill wanted Harry to help him, but Harry wasn't in the mood until Bill offered to pay him. Then Harry saw the light./ * /Mary thought it was fun to date older boys but when they started drinking, she saw the light./