Your noble friend will not accept pretension but will gently and very firmly confront you with your own blindness. – John O’Donohue Anam Cara: A Book of Celtic Wisdom.
Fanaticism comes from any form of chosen blindness accompanying the pursuit of a single dogma. – John Berger
Two kinds of blindness are easily combined so that those who do not see really appear to see what is not. – Tertullian
There is a condition worse than blindness, and that is, seeing something that isn’t there. – Thomas Hardy