The History Of Science, Like The History

No Number Of Sightings Of White Swans Can Prove The Theory That All Swans Are White. The Sighting Of Just One Black One May Disprove It.

It Is Wrong To Think That Belief In Freedom Always Leads To Victory; We Must Always Be Prepared For It To Lead To Defeat. If We Choose Freedom, Then We Must Be Prepared To Perish Along With It.

Philosophy Is A Necessary Activity Because We, All Of Us, Take A Great Number Of Things For Granted, And Many Of These Assumptions Are Of A Philosophical Character; We Act On Them In Private Life, In Politics, In Our Work, And In Every Other Sphere Of Our Lives -- But While Some Of These Assumptions Are No Doubt True, It Is Likely, That More Are False And Some Are Harmful. So The Critical Examination Of Our Presuppositions -- Which Is A Philosophical Activity -- Is Morally As Well As Intellectually Important.

Good Tests Kill Flawed Theories; We Remain Alive To Guess Again.

True Ignorance Is Not The Absence Of Knowledge, But The Refusal To Acquire It.