“A deed happens in a definite place at a definite time, but if it be sufficiently great and pregnant, its virtue radiates everywhere in time and space.”

“Heisenberg finds that facts of observation lead uniquely and inevitably to the theoretical structure known as matrix mechanics. This shows that the total radiation in any region of empty space can change only by a single complete quantum at a time. Thus not only in the photo-electric phenomenon, but in all other transfers of energy through space, energy is always transferred by complete quanta; fractions of a quantum can never occur. This brings atomicity into our picture of radiation just as definitely as the discovery of the electron and its standard charge brought atomicity into our picture of matter and of electricity.”

“If you're with me in my bad time, definitely, my good time will be yours.”

“History does not produce definitive answers for all time. It is a process.”

“We have traveled through space and time. We have been many places. Visited many worlds. And there is good news: the acoustics everywhere are terrific.”

“Perceptual space is not a special space in addition to physical space, but physical space which we endow with a special subjective metric. …apart from the definition of congruence in physics and that based on perception, there is no third one derived from pure visualization. Any such third definition is nothing but the definition of physical congruence to which our normative function has adjusted the subjective experience of congruence.”

“Every generation expands its definition of equality. Previous generations fought for the vote and civil rights. They had the New Deal and Great Society. Now it’s our time to define a new social contract for our generation.”

“I didn’t know at that time Emily Dickinson’s great definition, her 'Publication is not the business of poets’; being a poet is all, being known as a poet is nothing.”

“His time is forever, everywhere his place.”

“At different times and in different places I have come to expect certain books to look a certain way, and, as in all fashions, these changing features fix a precise quality onto a book's definition. I judge a book by its cover; I judge a book by its shape.”