A System Is Empirical Or Scientific Only

The Defence Of Democracy Must Consist In Making Anti-democratic Experiences Too Costly For Those Who Try Them; Much More Costly Than A Democratic Compromise

Unlimited Tolerance Must Lead To The Disappearance Of Tolerance. If We Extend Unlimited Tolerance Even To Those Who Are Intolerant, If We Are Not Prepared To Defend A Tolerant Society, Then The Tolerant Will Be Destroyed, And Tolerance With Them. We Should Therefore Claim, In The Name Of Tolerance, The Right Not To Tolerate The Intolerant.

The Influence (for Good Or Ill) Of Plato's Work Is Immeasurable. Western Thought, One Might Say, Has Been Platonic Or Anti-platonic, But Hardly Ever Non-platonic.

Better Our Hypotheses Die For Our Errors Than Ourselves.

We Have The Right Not To Tolerate The Intolerant. We Should Tolerate Even Them Whenever We Can Do So Without Running A Great Risk; But The Risk May Become So Great That We Cannot Allow Ourselves The Luxury.