The Greatest Challenge To Any Thinker Is

A Religious Creed Differs From A Scientific Theory In Claiming To Embody Eternal And Absolutely Certain Truth, Whereas Science Is Always Tentative, Expecting That Modification In Its Present Theories Will Sooner Or Later Be Found Necessary, And Aware That Its Method Is One Which Is Logically Incapable Of Arriving At A Complete And Final Demonstration.

For My Part, The Thing I Would Wish To Obtain From Money Would Be Leisure With Security. But What The Typical Modern Man Desires To Get With It Is More Money, With A View To Ostentation, Splendour, And The Outshining Of Those Who Have Hitherto Been His Equals.

Government Can Easily Exist Without Laws, But Law Cannot Exist Without Government.

Logic Must No More Admit A Unicorn Than Zoology Can.

The Argument Against The Persecution Of Opinion Does Not Depend Upon What The Excuse For Persecution May Be. The Argument Is That We None Of Us Know All Truth, That The Discovery Of New Truth Is Promoted By Free Discussion And Rendered Very Difficult By Suppression.