Intellectual Honesty Consists In Stating The Precise

No Experimental Result Can Ever Kill A Theory: Any Theory Can Be Saved From Counterinstances Either By Some Auxiliary Hypothesis Or By A Suitable Reinterpretation Of Its Terms.

One May Rationally Stick To A Degenerating Research Programme Until It Is Overtaken By A Rival And Even After. What One Must Not Do Is To Deny Its Poor Public Record... It Is Perfectly Rational To Play A Risky Game: What Is Irrational Is To Deceive Oneself About The Risk.

That Sometimes Clear ... And Sometimes Vague Stuff ... Which Is ... Mathematics.

Man's Respect For Knowledge Is One Of His Most Peculiar Characteristics. Knowledge In Latin Is Scientia, And Science Came To Be The Name Of The Most Respectable Kind Of Knowledge.

Intellectual Honesty Consists In Stating The Precise Conditions Under Which One Will Give Up One's Belief.