(On if his life was a success): Neither on my deathbed nor before will I ask myself such a question. Nature is not an engineer or a contractor, and I myself am a part of Nature.

The only reason for time is so that everything doesn’t happen at once.

Look deep into nature, and then you will understand everything better.

My scientific work is motivated by an irresistible longing to understand the secrets of nature and by no other feelings. My love for justice and the striving to contribute towards the improvement of human conditions are quite independent from my scientific interests.

How wretchedly inadequate is the theoretical physicist as he stands before Nature, and before his students.

Joy in looking and comprehending is nature’s most beautiful gift.

One must take what nature gives as one finds it.

"Mountains are to the rest of the body of the earth, what violent muscular action is to the body of man. The muscles and tendons of its anatomy are, in the mountain, brought out with force and convulsive energy, full of expression, passion, and strength."

Many readers fail to realize this, but 'The Color Purple' is a theological text. It is about the reclamation of one's original God: the earth and nature.

Our task must be to free ourselves… by widening our circle of compassion to embrace all living creatures and the whole of nature and it’s beauty.

I just think cities are unnatural, basically. I know there are people who live happily in them, and I have cities that I love, too. But it's a disaster that we have moved so far from nature.

I understood at a very early age that in nature, I felt everything I should feel in church but never did. Walking in the woods, I felt in touch with the universe and with the spirit of the universe.

In nature, nothing is perfect and everything is perfect. Trees can be contorted, bent in weird ways, and they're still beautiful.