What Really Makes Science Grow Is New

[great Scientists] Are Men Of Bold Ideas, But Highly Critical Of Their Own Ideas: They Try To Find Whether Their Ideas Are Right By Trying First To Find Whether They Are Not Perhaps Wrong. They Work With Bold Conjectures And Severe Attempts At Refuting Their Own Conjectures.

It Is Not Possible To Write Clearly Enough To Avoid Being Misrepresented By People Who Are Sufficiently Determined To Do So.

Man, Some Modern Philosophers Tell Us, Is Alienated From His World: He Is A Stranger And Afraid In A World He Never Made. Perhaps He Is; Yet So Are Animals, And Even Plants. They Too Were Born, Long Ago, Into A Physico-chemical World, A World They Never Made.

The Attempt To Make Heaven On Earth Invariably Produces Hell.

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