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Creative thinking should be viewed as an essential supplement to, though not a replacement for, critical thinking.

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When one door closes another door opens; but we often look so long and so regretfully upon the closed door, that we do not see the ones which open for us.

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When I examine myself and my methods of thought, I come to the conclusion that the gift of fantasy has meant more to me than any talent for abstract, positive thinking.

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The whole of science is nothing more than a refinement of everyday thinking.

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If we knew what it was we were doing, it would not be called research, would it?

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Underneath this flabby exterior is an enormous lack of character.

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It is only to the individual that a soul is given.

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The important thing is not to stop questioning. Curiosity has its own reason for existing. One cannot help but be in awe when he contemplates the mysteries of eternity, of life, of the marvelous structure of reality. It is enough if one tries merely to comprehend a little of this mystery every day. Never lose a holy curiosity.

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Never regard study as a duty, but as the enviable opportunity to learn to know the liberating influence of beauty in the realm of the spirit for your own personal joy and to the profit of the community to which your later work belongs.

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A human being is part of a whole, called by us the Universe, a part limited in time and space. He experiences himself, his thoughts and feelings, as something separated from the rest--a kind of optical delusion of his consciousness. This delusion is a kind of prison for us, restricting us to our personal desires and to affection for a few persons nearest us. Our task must be to free ourselves from this prison by widening our circles of compassion to embrace all living creatures and the whole of nature in its beauty.

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