Do not grow old, no matter how long you live. Never cease to stand like curious children before the Great Mystery into which we were born.

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

Although I am a typical loner in my daily life, my awareness of belonging to the invisible community of those who strive for truth, beauty, and justice has prevented me from feelings of isolation.

Belief in an external world independent of the perceiving subject is the basis of all natural science.

If you want the answer to anything, go sit in Nature for awhile

Though our conduct seems so very different from that of the higher animals, the primary instincts are much alike in them and in us.

The creative principle [of science] resides in mathematics.