"It was clear that in the United States there was a development not of the best, but of the middle and worst sides of European civilization; the notorious general voting, the tendency to politics... al…"

"I have spent twenty-five years in the study of petroleum and have come to the conclusion that it is a product of the earth's interior, formed at great depths."

"The most all penetrating spirit before which will open the possibility of tilting not tables, but planets, is the spirit of free human inquiry. Believe only in that."

"Hypotheses help and guide scientific work — the search for truth — as the tiller's plough helps the cultivation of useful plants."

"Refrain from illusions, insist on work, and not on words, patiently search divine and scientific truth."