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It is certain, in any case, that ignorance, allied with power, is the most ferocious enemy justice can have.

Conflict grows out of ignorance and suspicion.

Stupidity is the deliberate cultivation of ignorance.

Ignorance is a menace to peace.

One who cannot live in harmony with others is regarded as an ignorant fool, even if he happens to be very learned in various matters.

When you're fighting for social justice, one of my biggest pet peeves is speaking out of ignorance.

Ignorance is never better than knowledge.

Entire ignorance is not so terrible or extreme an evil, and is far from being the greatest of all; too much cleverness and too much learning, accompanied with ill bringing-up, are far more fatal.

It ain't ignorance that causes all the trouble in this world. It's the things people know that ain't so.

Not engaging in ignorance is wisdom.