The single most important decision any of us will ever make is whether or not to believe the universe is friendly.

Never regard study as a duty, but as the enviable opportunity to learn

Everything that is really great and inspiring is created by the individual who can labor in freedom.

Marie Curie is, of all celebrated beings, the only one whom fame has not corrupted.

Our task is to widen our circle of compassion to include all living beings and all of nature

My sense of god is my sense of wonder about the universe.

The history of scientific and technical discovery teaches us that the human race is poor in independent and creative imagination. Even when the external and scientific requirements for the birth of an idea have long been there, it generally needs an external stimulus to make it actually happen; man has, so to speak, to stumble right up against the thing before the idea comes.