Every community takes credit for this quote. It is at once a Buddhist saying, a Taoist saying, proceeds from Matthew 7:7, is an old proverb of Hindu origin, was written in ancient Egyptian texts and adopted by Crowley, was published first by the Theosophists, and so on.
It is claimed by all because it is, in fact, a deep truth, a commonality of being, a thing shared. It resonates for the same reason.
It speaks to the transcendental shift from no-path to on-path, from lostness to found-ness. It is a statement on redemption, of a kind that everyone either deeply desires or has already had.
It is a recurring season of life.