All that I give to others comes back to me multifold.

It comes back, though rarely from the same direction and almost never on schedule. The help you gave a colleague in 2018 does not repay itself in 2019 by the same route.

Worth knowing, because the version of giving that expects a matching return curdles fast. Nobody enjoys being on the receiving end of a favour with terms attached.

What does return reliably is smaller and more immediate — the fact of having been useful, which changes how the rest of the afternoon goes. That part arrives the same day.