As a matter of fact, when it comes to seeing, men display two tendencies: they see what they wish to see, what is useful to them, what is agreeable. The second is the tendency toward inhibition; they do not see what they do not wish to see, what is useless to them, or disagreeable.
Rémy de Gourmont, Philosophic Nights in Paris,: Being Selections from Promenades Philosophiques
bias, faults, folly, perspective