"It is one of the strange discoveries a man can make that life, however you lead it, contains moments of exhilaration; there are always comparisons which can be made with worse times: even in danger and misery the pendulum swings."

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What really matters for me is ... the more active role of the observer in quantum physics ... According to quantum physics the observer has indeed a new relation to the physical events around him in comparison with the classical observer, who is merely a spectator.

— Wolfgang Pauli