What Science Cannot Discover, Mankind Cannot Know.

We Shall Say That We Have Acquaintance With Anything Of Which We Are Directly Aware, Without The Intermediary Of Any Process Of Inference Of Any Knowledge Of Truths.

Ethics Is In Origin The Art Of Recommending To Others The Sacrifices Required For Cooperation With Oneself.

It Is Clear That Thought Is Not Free If The Profession Of Certain Opinions Makes It Impossible To Earn A Living.

A Habit Of Basing Convictions Upon Evidence, And Of Giving To Them Only That Degree Or Certainty Which The Evidence Warrants, Would, If It Became General, Cure Most Of The Ills From Which The World Suffers.

An Honest Politician Will Not Be Tolerated By A Democracy Unless He Is Very Stupid ... Because Only A Very Stupid Man Can Honestly Share The Prejudices Of More Than Half The Nation.