The History Of Science Is Everywhere Speculative.

We Do Not Know Anything - This Is The First. Therefore, We Should Be Very Modest - This Is The Second. Not To Claim That We Do Know When We Do Not - This Is The Third. That's The Kind Of Attitude I'd Like To Popularize. There Is Little Hope For Success.

If We Are Not Prepared To Defend A Tolerant Society Against The Onslaught Of The Intolerant, Then The Tolerant Will Be Destroyed, And Tolerance With Them.

When We Enter A New Situation In Life And Are Confronted By A New Person, We Bring With Us The Prejudices Of The Past And Our Previous Experiences Of People. These Prejudices We Project Upon The New Person. Indeed, Getting To Know A Person Is Largely A Matter Of Withdrawing Projections; Of Dispelling The Smoke Screen Of What We Imagine He Is Like And Replacing It With The Reality Of What He Is Actually Like.

Plato Felt That A Complete Reconstruction Of Society's Political Program Was Needed.

No Particular Theory May Ever Be Regarded As Absolutely Certain.... No Scientific Theory Is Sacrosanct.