There Is No Absolute Knowledge. And Those

The Most Remarkable Discovery Made By Scientists Is Science Itself. The Discovery Must Be Compared In Importance With The Invention Of Cave-painting And Of Writing. Like These Earlier Human Creations, Science Is An Attempt To Control Our Surroundings By Entering Into Them And Understanding Them From Inside. And Like Them, Science Has Surely Made A Critical Step In Human Development Which Cannot Be Reversed. We Cannot Conceive A Future Society Without Science.

One Aim Of Physical Sciences Had Been To Give An Exact Picture The Material World. One Achievement Of Physics In The Twentieth Century Has Been To Prove That That Aim Is Unattainable.

One Original Thought Is Worth The Sum Total Of Human Knowledge, Because It Advances The Sum Total Of Human Knowledge By That One Original Thought.

Every Judgment In Science Stands On The Edge Of Error, And Is Personal.

Sex Was Invented As A Biological Instrument By (say) The Green Algae. But As An Instrument In The Ascent Of Man Which Is Basic To His Cultural Evolution, It Was Invented By Man Himself.