"·With the advent of quantum mechanics in the 1920s, the reality of the photon became a fundamental part of physics."
"·A little mathematical plotting and charting reveals an interesting thing about such a random walk: statistically, the drunk's distance from the lamp will be proportional to the square root of the number of seconds that have elapsed."
"·For all practical purposes, the physical reality of atoms and molecules was now conclusively proven."At the time atoms and molecules were still far from being regarded as real," the theoretical physicist Max Born later recalled,"I think that these investigations of Einstein have done more than any "
"·"I'm truly a lone traveler and have never belonged to my country,my home,my friends,or even my immediate family,with my whole heart; in the face of all these ties, I have never lost a sense of distance and a need for solitude." ——Einstein ·"His extreme kindness and decency are thoroughly impersonal"