There are many, many people in the world (Beliefnet)

Now, there are many, many people in the world, but relatively few with whom
we interact, and even fewer who cause us problems. So, when you come across
such a chance for practicing patience and tolerance, you should treat it
with gratitude. It is rare. Just as having unexpectedly found a treasure in
your own house, you should be happy and grateful to your enemy for providing
that precious opportunity. (HH the Dalai Lama)