the most dangerous enemy is that which no one fears!

The unseen enemy is always the most fearsome.

The most dangerous enemy is the one within.

من العدو الذي يجب أن نحذره ؟
- اليأس

The greatest enemy is one that has nothing to lose.

The greatest enemy will hide in the last place you would ever look.

Nothing is more dangerous than an enemy with nothing to loose.

The most dangerous kind of person... is one who is afraid of his own shadow.

The most dangerous enemy of the truth and freedom amongst us is the compact majority

Често човек е най-злият враг на самия себе си

The most dangerous person is the one who listens, thinks and observes.

The most dangerous man to any government is the man who is able to think things out for himself, without regard to the prevailing superstitions and taboos. Almost inevitably he comes to the conclusion that the government he lives under is dishonest, insane, and intolerable...

An unsuspected enemy is doubly dangerous.

Fear is as dangerous an enemy as resentment.