We Do Not Know. We Can Only

I Think That There Is Only One Way To Science - Or To Philosophy, For That Matter: To Meet A Problem, To See Its Beauty And Fall In Love With It; To Get Married To It And To Live With It Happily, Till Death Do Ye Part - Unless You Should Meet Another And Even More Fascinating Problem Or Unless, Indeed, You Should Obtain A Solution. But Even If You Do Obtain A Solution, You May Then Discover, To Your Delight, The Existence Of A Whole Family Of Enchanting, Though Perhaps Difficult, Problem Children, For Whose Welfare You May Work, With A Purpose, To The End Of Your Days.

Those Who Promise Us Paradise On Earth Never Produced Anything But A Hell.

Science Does Not Rest Upon Solid Bedrock. The Bold Structure Of Its Theories Rises, As It Were, Above A Swamp. It Is Like A Building Erected On Piles. The Piles Are Driven Down From Above Into The Swamp, But Not Down To Any Natural Or 'given' Base; And If We Stop Driving The Piles Deeper, It Is Not Because We Have Reached Firm Ground. We Simply Stop When We Are Satisfied That The Piles Are Firm Enough To Carry The Structure, At Least For The Time Being.

I Have Come To The Conclusion That Darwinism Is Not A Testable Scientific Theory, But A Metaphysical Research Programme.

There Will Be Well-testable Theories, Hardly Testable Theories, And Non-testable Theories. Those Which Are Non-testable Are Of No Interest To Empirical Scientists. They May Be Described As Metaphysical.