The Attempt To Make Heaven On Earth

The Growth Of Our Knowledge Is The Result Of A Process Closely Resembling What Darwin Called 'natural Selection'; That Is, The Natural Selection Of Hypotheses: Our Knowledge Consists, At Every Moment, Of Those Hypotheses Which Have Shown Their (comparative) Fitness By Surviving So Far In Their Struggle For Existence, A Competitive Struggle Which Eliminates Those Hypotheses Which Are Unfit.

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

It Must Be Possible For An Empirical System To Be Refuted By Experience.

It Is Clear That Everybody Interested In Science Must Be Interested In World 3 Objects. A Physical Scientist, To Start With, May Be Interested Mainly In World 1 Objects--say Crystals And X-rays. But Very Soon He Must Realize How Much Depends On Our Interpretation Of The Facts, That Is, On Our Theories, And So On World 3 Objects. Similarly, A Historian Of Science, Or A Philosopher Interested In Science Must Be Largely A Student Of World 3 Objects.

No Book Can Ever Be Finished. While Working On It We Learn Just Enough To Find It Immature The Moment We Turn Away From It