If anybody says he can think about quantum problems without getting giddy, that only shows he has not understood the first thing about them.
His name stands magnificently over the portal of classical physics, and we can say this of him; by his birth James Clerk Maxwell belongs to Edinburgh, by his personality he belongs to Cambridge, by his work he belongs to the whole world.
It is not the possession of truth, but the success which attends the seeking after it, that enriches the seeker and brings happiness to him.
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