Whatever We Know Without Inference Is Mental.

The Harm That Theology Has Done Is Not To Create Cruel Impulses, But To Give Them The Sanction Of What Professes To Be Lofty Ethic, And To Confer An Apparently Sacred Character Upon Practices Which Have Come Down From More Ignorant And Barbarous Times.

Not To Be Absolutely Certain Is, I Think, One Of The Essential Things In Rationality.

To Discover A System For The Avoidance Of War Is A Vital Need Of Our Civilisation.

It Seems To Us Unwise To Have Insisted On Teaching Geometry To The Younger Dionysius, Tyrant Of Syracuse, In Order To Make Him A Good King, But From Plato's Point Of View It Was Essential. He Was Sufficiently Pythagorean To Think That Without Mathematics No True Wisdom Is Possible.

If A Black Death Could Be Spread Throughout The World Once In Every Generation Survivors Could Procreate Freely Without Making The World Too Full.