Who said “Religion is the sigh of the oppressed creature, the heart of a heartless world, and the…”?

“Religions are the cradles of despotism.”

“For a truly religious man nothing is tragic.”

“Religion! what treasure untold resides in that heavenly word!”

“And lips say ''God be pitiful,'' who never said, ''God be praised.''”

“My religion? Well, my dear, I am a Millionaire. That is my religion.”

“Philosophy stands in the same relation to the study of the actual world as masturbation to sexual love.”

“Capital is dead labor, that vampire-like, only lives by sucking living labor, and lives the more, the more labor it sucks.”

“Capital is money, capital is commodities. By virtue of it being value, it has acquired the occult ability to add value to itself. It brings forth living offspring, or, at the least, lays golden eggs.”

“The product of mental labor -- science -- always stands far below its value, because the labor-time necessary to reproduce it has no relation at all to the labor-time required for its original production.”

“The Tories in England long imagined that they were enthusiastic about monarchy, the church, and the beauties of the old English Constitution, until the day of danger wrung from them the confession that they are enthusiastic only about ground rent.”

“Mankind always sets itself only such tasks as it can solve; since, looking at the matter more closely, we will always find that the task itself arises only when the material conditions necessary for its solution already exist or are at least in the process of formation.”