Cognitive bias

A cognitive bias is a systematic pattern of deviation from norm or rationality in judgment. Individuals create their own "subjective social reality" from their perception of the input.

Quotes

 * When the learned take neither revelation nor reason for their guide, they fall into as great, and worse errors, than the unlearned; for they only make use of that system of Divine wisdom, which should guide them into truth, when they can find or pick out any thing that will suit their purpose, or that they can pervert to such—the very means of leading themselves and others into error.
 * Ottobah Cugoano, Thoughts and Sentiments on the Evil of Slavery (1787)