To conquer fear is the beginning of wisdom.

Boredom is... a vital problem for the moralist, since half the sins of mankind are caused by the fear of it.

Fear is the main source of superstition, and one of the main sources of cruelty. To conquer fear is the beginning of wisdom.

Collective fear stimulates herd instinct, and tends to produce ferocity toward those who are not regarded as members of the herd.

Do not fear to be eccentric in opinion, for every opinion now accepted was once eccentric.