Immanuel Kant

"All our knowledge begins with the senses, proceeds then to the understanding, and ends with reason. There is nothing higher than reason."

"The death of dogma is the birth of reality."

"Thoughts without content are empty, intuitions without concepts are blind."

"But, though all our knowledge begins with experience, it by no means follows that all arises out of experience."

"One who makes himself a worm cannot complain afterwards if people step on him."