“This mental inertia of science lasted through the eighties before showing signs of breaking up; and nothing short of radium fairly wakened men to the fact, long since evident, that force was inexhaustible.”

“Men are the dominant sign-using animals. Animals other than man do, of course, respond to certain things as signs of something else, but such signs do not attain the complexity and elaboration which is found in human speech, writing, art, testing devices, medical diagnosis, and signaling instruments. Science and signs are inseparably interconnected, since science both presents men with more reliable signs and embodies its results is systems of signs. Human civilization is dependent upon signs and systems of signs, and the human mind is inseparable from the functioning of signs - if indeed mentality is not to be identified with such functioning.”

“I have been the last to sign this treaty; I will be the last to break it.”

“Men are different. It is diversity that makes life interesting. There is no common basis in mens minds. The unconscious is inexhaustible and uncontrollable. Its force surpasses us. It is as mysterious as the last particle of a brain cell. Even if we knew it, we could not reconstruct it.”

“The Communists say that there are the only two means of establishing communism. The first is violence. Nothing short of it will suffice to break up the existing system. The other is dictatorship of the proletariat. Nothing short of it will suffice to continue the new system.”

“A life of short duration… could be so rich in joy and love that it could contain more meaning than a life lasting eighty years.”

“Things men have made with wakened hands, and put soft life into
are awake through years with transferred touch, and go on glowing
for long years.
And for this reason, some old things are lovely
warm still with the life of forgotten men who made them.”

“A library book lasts as long as a house, for hundreds of years. It is not an article for mere consumption, but fairly of capital, and often in the case of professional men, setting out in life, it is their only capital.”

“It has nothing to do with belief. It's a fact. It's the truth! As a scientist, I know it's true because science is based on skepticism. We consider all possibilities equally and decide on facts based on what stands up to empirical evidence. Which is how I know that you gomers are absolutely and totally wrong.”

“All abstract sciences are nothing but the study of relations between signs.”