One's Work Is Never So Bad As

The Desire To Understand The World And The Desire To Reform It Are The Two Great Engines Of Progress, Without Which Human Society Would Stand Still Or Retrogress.

The Practice Of Inhibiting Impulses, Which Is To A Great Extent Necessary To Civilized Life, Makes Mistakes Easier, By Preventing Experience Of The Actions To Which A Desire Would Otherwise Lead, And By Often Causing The Inhibited Impulses Themselves To Be Unnoticed Or Quickly Forgotten.

This, However, Is A Passing Nightmare; In Time The Earth Will Become Again Incapable Of Supporting Life, And Peace Will Return.

A Happy Life Must Be To A Great Extent A Quiet Life, For It Is Only In An Atmosphere Of Quiet That True Joy Dare Live.

The First Man Who Said "fire Burns" Was Employing Scientific Method, At Any Rate If He Had Allowed Himself To Be Burnt Several Times. This Man Had Already Passed Through The Two Stages Of Observation And Generalization. He Had Not, However, What Scientific Technique Demands - A Careful Choice Of Significant Facts On The One Hand, And, On The Other Hand, Various Means Of Arriving At Laws Otherwise Than My Mere Generalization.