Who said “I do not pretend to know where many ignorant men are sure -- that is all that…”?

“Where ignorance is bliss, 'Tis folly to be wise.”

“Everybody is ignorant -- only on different subjects.”

“To be ignorant of one's ignorance is the malady of the ignorant.”

“Nothing in the world is more dangerous than sincere ignorance and conscientious stupidity.”

“Ignorance breeds monsters to fill up all the vacancies of the soul that are unoccupied by the verities of knowledge.”

“You can only be free if I am free.”

“There is no such thing as justice, in or out of court.”

“Chase after the truth like all hell and you'll free yourself, even though you never touch its coat tails.”

“With all their faults, trade unions have done more for humanity than any other organization of men that ever existed. They have done more for decency, for honesty, for education, for the betterment of the race, for the developing of character in man, than any other association of men.”

“The trouble with law is lawyers.”

“Just think of the tragedy of teaching children not to doubt.”