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"It is a primitive form of thought that things exist or do not exist."

"We are bits of stellar matter that got cold by accident, bits of a star gone wrong."

"Science is one thing, wisdom is another. Science is an edged tool, with which men play like children, and cut their own fingers."

"I ask you to look both ways. For the road to a knowledge of the stars leads through the atom; and important knowledge of the atom has been reached through the stars."

"In Einstein's theory of relativity the observer is a man who sets out in quest of truth armed with a measuring-rod. In quantum theory he sets out with a sieve."

"The mathematics is not there till we put it there."

"It is impossible to trap modern physics into predicting anything with perfect determinism because it deals with probabilities from the outset."

"I ask you to look both ways. For the road to a knowledge of the stars leads through the atom; and important knowledge of the atom has been reached through the stars."