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

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

Neither a man nor a crowd nor a nation can be trusted to act humanely or to think sanely under the influence of a great fear.

Conquer the world by intelligence, and not merely by being slavishly subdued by the terror that comes from it.

To fear love is to fear life, and those who fear life are already three-parts deadالخوفُ من الحبِّ يعني الخوفَ من الحياةِ، وأولئكَ الذينَ يخافونَ الحياةَ هم بالفعلِ ثلاثة أرباع موتى!

Religion is based, I think, primarily and mainly upon fear.....Fear is the parent of cruelty, and therefore it is no wonder if cruelty and religion has gone hand-in-hand.

Men fear thought as they fear nothing else on earth -- more than ruin -- more even than death.... Thought is subversive and revolutionary,destructive and terrible,thought is merciless to privilege,established institutions,and comfortable habit.Thought looks into the pit of hell and is not afraid.Thought is great and swift and free,the light of the world, and the chief glory of man.

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

Freedom in general may be defined as the absence of obstacles to the realization of desires.