All Human Activity Is Prompted By Desire.

All The Important Human Advances That We Know Of Since Historical Times Began Have Been Due To Individuals Of Whom The Majority Faced Virulent Public Opposition.

Not To Be Absolutely Certain Is, I Think, One Of The Essential Things In Rationality.

Science Is What We Know, And Philosophy Is What We Don't Know.

I Think People Who Are Unhappy Are Always Proud Of Being So, And Therefore Do Not Like To Be Told That There Is Nothing Grand About Their Unhappiness. A Man Who Is Melancholy Because Lack Of Exercise Has Upset His Liver Always Believes That It Is The Loss Of God, Or The Menace Of Bolshevism, Or Some Such Dignified Cause That Makes Him Sad. When You Tell People That Happiness Is A Simple Matter, They Get Annoyed With You.

One Of The Chief Obstacles To Intelligence Is Credulity, And Credulity Could Be Enormously Diminished By Instructions As To The Prevalent Forms Of Mendacity.