Thought is the origin of fear.

It is our own evil thoughts which madden us.

That fear which gives birth to thoughts, and the fear of thoughts...

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 habits; thought is anarchic and lawless, indifferent to authority, careless of the well-tried wisdom of the ages. 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.

Foul thoughts, once allowed to enter the mind, stick like the leprosy. They corrode, contaminate, and infect like the pestilence; naught but Almighty power can deliver from the bondage of concupiscence a soul once infected by this foul blight, this moral contagium.

Evil thought is a dangerous pet. It is safer to play with it from behind the iron bars of circumstance.

Often the fear of one evil leads us into a worse.

It was the oldest, most primal fear of humankind, inculcated by eons of brutal lessons which, titrated down into their purest form, became age’s invariable advice to youth: beware the things and places you do not know.Because out there, beyond the flickering ring of the tribal fire, on the unlit streets of concrete cities, in the unending depths of space—there lay an unquantifiable, unbounded potential for death.

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 habits; thought is anarchic and lawless, indifferent to authority, careless of the well-tried wisdom of the ages. Thought looks into the pit of hell and is not afraid. It sees man, a feeble speck, surrounded by unfathomable depths of silence; yet it bears itself proudly, as unmoved as if it were lord of the universe. Thought is great and swift and free, the light of the world, and the chief glory of man.

Every thought derives from a thwarted sensation.

When fear has seized upon the mind, man fears that only which he first began to fear.

Fear of evil is greater than the evil itself.

Fear is pain arising from the anticipation of evil.

False words are not only evil in themselves, but they infect the soul with evil.