If the question is whether it is possible for Fate and Free-Will to coexist, then the answer is “No.” Fate and Free Will are mutually exclusive and cannot coexist. If Fate truly exists, people will believe whatever they are fated to believe — and nothing else.
I think that out of courtesy for Shakespeare the original quote from the play Julius Cesar could be mentioned but since it is a paraphrase of the quote and not the exact words spoken by Mark Anthony then I think it is not absolutely necessary to cite the source.