What separates me from most so-called atheists is a feeling of utter humility toward the unattainable secrets of the harmony of the cosmos.

In every true searcher of Nature there is a kind of religious reverence, for he finds it impossible to imagine that he is the first to have thought out the exceedingly delicate threads that connect his perceptions

Insofar as we may at all claim that slavery has been abolished today, we owe its abolition to the practical consequences of science

Imagination is more important than knowledge. Imagination is the language of the soul. Pay attention to your imagination and you will discover all you need to be fulfilled.

Out yonder there was this huge world...which stands before us like a great eternal riddle.

Everything that the human race has done and thought is concerned with the satisfaction of deeply felt needs and the assuagement of pain. One has to keep this constantly in mind if one wishes to understand spiritual movements and their development. Feeling and longing are the motive force behind all human endeavor and human creation, in however exalted a guise the latter may present themselves to us.

Whether or not you can observe a thing depends upon the theory you use. It is the theory which decides what can be observed.