[one] Must Look Into Hell Before One

Although This May Seem A Paradox, All Exact Science Is Dominated By The Idea Of Approximation. When A Man Tells You That He Knows The Exact Truth About Anything, You Are Safe In Inferring That He Is An Inexact Man. Every Careful Measurement In Science Is Always Given With The Probable Error ... Every Observer Admits That He Is Likely Wrong, And Knows About How Much Wrong He Is Likely To Be.

The Happy Life Is To An Extraordinary Extent The Same As The Good Life.

There Are Still Many People In America Who Regard Depressions As Acts Of God. I Think Keynes Proved That The Responsibility For These Occurrences Does Not Rest With Providence.

A Priori Logical Propositions Are Such As Can Be Known A Priori Without Study Of The Actual World.

A Habit Of Basing Convictions Upon Evidence, And Of Giving To Them Only That Degree Or Certainty Which The Evidence Warrants, Would, If It Became General, Cure Most Of The Ills From Which The World Suffers.