When two hypotheses are possible, we provisionally choose that which our minds adjudge to be simpler, on the supposition that this is the more likely to lead in the direction of truth. It includes as a special case the principle of Occam's razor-entia non multiplicana praeter necessitatem.

The complete closed world consists of three parts-substratum, phenomenal world, and observer. By our experiments we drag up activities from the substratum into…

Physics and philosophy are at most a few thousand years old, but probably have lives of thousands of millions of years stretching away in front of them. They a…

...a detailed mathematical discussion shows that whatever kind of wave-packet we select to represent the electron, the product of the two uncertainties of posi…

Mathematical reasoning may be regarded rather schematically as the exercise of a combination of two facilities, which we may call intuition and ingenuity. The …

Her reasoning is full of tricks And butterfly suggestions, I know no point to which she sticks; She begs the simplest questions, And, when her premises are str…

Metaphysics is the finding of bad reasons for what we believe upon instinct; but to find these reasons is no less an instinct.