Silence is one of the hardest arguments to refute.
— Josh Billings

People can refute your facts, but never your feelings.
Sharon Anthony Bower refute quote

In fact men will fight for a superstition quite as quickly as for a living truth - often more so, since a superstition is so intangible you cannot get at it to refute it, but truth is a point of view, and so is changeable.
— Hypatia

Who can refute a sneer?
— William Paley

It is certainly not the least charm of a theory that it is refutable; it is precisely thereby that it attracts the more subtle minds. It seems that the hundred-times-refuted theory of the free will owes its persistence to this charm alone; some one is always appearing who feels himself strong enough to refute it.
— Friedrich Nietzsche