The Symbol And The Metaphor Are As

The Principle Of Tolerance, Fixed Once For All The Realization That All Knowledge Is Limited. It Is An Irony Of History That At The Very Time When This Was Being Worked Out, There Should Rise, Under Hitler In Germany And Other Tyrants Elsewhere, A Counter-conception: A Principle Of Monstrous Certainty. When The Future Looks Back On The 1930's, It Will Think Of Them As A Crucial Confrontation Of Culture As I Have Been Expounding It - The Ascent Of Man Against The Throwback To The Despots' Belief That They Have Absolute Certainty.

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.

The Paradox Of Knowledge Is Not Confined To The Small, Atomic Scale; On The Contrary, It Is As Cogent On The Scale Of Man, And Even Of The Stars.

It Doesn't Matter Whether You're Talking About Bombs Or The Intelligence Quotients Of One Race As Against Another If A Man Is A Scientist, Like Me, He'll Always Say Publish And Be Damned.

Science Is A Very Human Form Of Knowledge. We Are Always At The Brink Of The Known; We Always Feel Forward For What Is To Be Hoped. Every Judgment In Science Stands On The Edge Of Error And Is Personal. Science Is A Tribute To What We Can Know Although We Are Fallible.