to know about sb / sth because you have been told about them; to refuse to allow, accept, or even consider something (usually will not / would not hear of)
Oxford80% of films
to know about sb / sth because you have been told about them
Editorial15% of films
to refuse to allow, accept, or even consider something (usually will not / would not hear of)
He will not hear of godliness.
Definitions from the Oxford Advanced Learner's Dictionary, 9th edition