Chetan (ch374n)

Rather, every one should believe with absolute faith in the precept of our Sages, of blessed memory: "And be humble of spirit before every man," without exception, for it is a true statement and a correct proverb that every man becomes better through his fellow. {Since every individual possesses specific qualities that others lack, the realization by disparate people that in essence they comprise one whole, enables them all to be complemented and perfected by each other.}