The Hand Is The Cutting Edge Of

Astronomy Is Not The Apex Of Science Or Of Invention. But It Is A Test Of The Cast Of Temperament And Mind That Underlies A Culture.

Revolutions Are Not Made By Fate But By Men.

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.

A Popular Cliche In Philosophy Says That Science Is Pure Analysis Or Reductionism, Like Taking The Rainbow To Pieces; And Art Is Pure Synthesis, Putting The Rainbow Together. This Is Not So. All Imagination Begins By Analyzing Nature.

The Preoccupation With The Choice Of A Mate Both By Male And Female I Regard As A Continuing Echo Of The Major Selective Force By Which We Have Evolved.