Karl Marx

"The great task is to bring the past down from its pedestal."

"The species-being of man is freedom of thought and action."

"Labor is the only source of all wealth and knowledge."

"The only antidote to mental suffering is physical pain."

"Society as a whole is becoming a single factory."

"The first requisite for the happiness of the people is the abolition of religion."

"Wage labor is merely a form of slavery."

"The individual is born into society; he cannot exist without it."

"To accomplish the dissolution of the present state of things, we must understand its nature."

"The struggle between capital and labor will determine the future of civilization."

"A commodity appears at first sight an extremely obvious, trivial thing."

"The world has never been won except by thought."

"The materialist doctrine that men are products of circumstances changes the meaning of democracy."

"Power tends to corrupt, and absolute power corrupts absolutely."

"The human personality is a creation of historical conditions."

"Revolution is the locomotive of history."

"The market is the theatre of exchange."

"Necessity is not only the mother of necessity; she is also the mother of invention."

"All forms of power eventually become their own enemies."

"The future belongs to those who believe in the beauty of their dreams."