“Knowledge is just a commodity. It is acquired in order to be resold. All those who have grown out of going to school have to do their learning virtually in secret, for anyone who admits the he has still something to learn devalues himself as a man whose knowledge is inadequate.”

“Nowadays, anyone who wishes to combat lies and ignorance and to write the truth must overcome at least five difficulties. He must have the courage to write the truth when truth is everywhere opposed; the keenness to recognize it, although it is everywhere concealed; the skill to manipulate it as a weapon; the judgment to select those in whose hands it will be effective; and the running to spread the truth among such persons.”

“For what's the use of talking with a man who has a disease and thinks about the stars?”

“Do not fear death so much, but rather the inadequate life”

“The thinking man often rebuked his girlfriend because of her extravagance. Once he discovered four pairs of shoes in her room. “I also have four different kinds of feet,” she excused herself. The thinking man laughed and asked: “So what do you do, when one pair is worn out?” At that, she realized he was not yet quite in the picture and said, “I made a mistake, I have five different kinds of feet.” With that the thinking man was finally in the picture.”

“He who laughs last has not yet heard the bad news. ”

“For time flows on, and if it did not, it would be a bad prospect for those who do not sit at golden tables. Methods become exhausted; stimuli no longer work. New problems appear and demand new methods. Reality changes; in order to represent it, modes of representation must also change. Nothing comes from nothing; the new comes from the old, but that is why it is new.”