“If a man does not keep peace with his companions, perhaps it is because he hears a different drummer.?

Question

Let him step to the music which he hears, however measures or far away.”
what does this quote mean

Answer 1

It means that not everyone has the same idea or opinion and that person has to go the way he feels best; by what's in his heart.

Answer 2

This is a quote about tolerance. If someone is not being peaceful maybe, it's because they prescribe to different ideals than the people they are feuding with. And the person who wrote the quote is saying that it's okay to have that happen, and that it's proper to let that person do what they feel necessary in their hearts.