“Poetry is as necessary to comprehension as science. It is as impossible to live without reverence as it is without joy.”

“...some have asked me what understanding of Nature one shapes from so strange a year? I would answer that one's first appreciation is a sense that creation is still going on, that the creative forces are as great and as active to-day as they have ever been, and that to-morrow's morning will be as heroic as any of the world. Creation is here and now. So near is man to the creative pageant, so much a part is he of the endless and incredible experiment, that any glimpse he may have will be but the revelation of a moment, a solitary note heard in a symphony thundering through debatable existences of time. Poetry is as necessary to comprehension as science. It is as impossible to live without reverence as it is without joy”

“Science requires both observation and comprehension. Without observation there are no facts to be comprehended; without comprehension science is mere documentation. The basis for comprehension is theory, and the language of theoretical science is mathematics. Theory is constructed on a foundation of hypothesis; the fewer the hypotheses needed to explain existing observations and predict new phenomena, the more ‘elegant’ the theory”

“To get profit without risk, experience without danger, and reward without work, is as impossible as it is to live without being born.”

“And do you know, do you know that mankind can live without the Englishman, it can live without Germany, it can live only too well without the Russian man, it can live without science, without bread, and it only cannot live without beauty, for then there would be nothing at all to do in the world! The whole secret is here, the whole of history is here. Science itself would not stand for a minute without beauty”

“All lives are composed of two basic elements," the squirrel said, "purpose and poetry. By being ourselves, squirrel and raven, we fulfill the first requirement, you in flight and I in my tree. But there is poetry in the meanest of lives, and if we leave it unsought we leave ourselves unrealized. A life without food, without shelter, without love, a life lived in the rain—this is nothing beside a life without poetry.”