At one time it had been a sign of madness to believe that the earth goes round the sun; today, to believe that the past is inalterable. He might be ALONE in holding that belief, and if alone, then a lunatic. But the thought of being a lunatic did not greatly trouble him: the horror was that he might also be wrong.

George Orwell

1984. Part 1, Chapter 7. Winston. The issue is not how many people share your view, but whether it is true.