"Arrogant or critical people are often people with low self-esteem who are afraid of taking risks. That's because, if you learn something new, you are then required to make mistakes in order to fully understand what you have learned."

Next Quote

History is the most dangerous product which the chemistry of the mind has concocted. Its properties are well known. It produces dreams and drunkenness. It fills people with false memories, exaggerates their reactions, exacerbates old grievances, torments them in their repose, and encourages either a delirium of grandeur or a delusion of persecution. It makes whole nations bitter, arrogant, insufferable and vainglorious.

— Paul Valery