Wolfgang Pauli

"When I was young, I thought I was the best formalist of my time. I thought I was a revolutionary. When the big problems would come, I would be the one to solve them. But then the great revolution came, it was Heisenberg and Dirac who made it. I was only a classicist."

— from Self-reflection

"The layman always means, when he says 'reality,' that he is speaking of something self-evidently known; whereas to me it seems the most important and exceedingly difficult task of our time is to work on the construction of a new idea of reality."

— from Letter to Markus Fierz, 1954

"A new scientific truth does not triumph by convincing its opponents and making them see the light, but rather because its opponents eventually die, and a new generation grows up that is familiar with it."

— from Attributed to Max Planck, but often quoted by Pauli in discussions of scientific change