Now I do not myself share that superstitious reverence for the beliefs of common sense which many contemporary philosophers profess. But I think that we must start from them, and that we ought to depart from them only when we find good reason to do so.

Induction is the glory of science and the scandal of philosophy.

As so often happens in philosophy, clever people accept a false general principle on a priori grounds and then devote endless labour and ingenuity to explaining away plain facts which obviously conflict with it.

... a curious superstition. This is the belief that, if there be introspection at all, it must give exhaustive and infallible information.

the future is simply nothing at all. Nothing has happened to the present by becoming past except that fresh slices of existence have been added to the total history of the world. The past is thus as real as the present.

...By a 'silly' theory I mean one which may be held at the time when one is talking or writing professionally, but which only an inmate of a lunatic asylum would think of carrying into daily life. ... It must not be supposed that the men who maintain these theories and beliefs are 'silly' people. Only very acute and learned men could have thought of anything so odd or defended anything so preposterous against the continual protests of common sense.

Now I do not myself share that superstitious reverence for the beliefs of common sense which many contemporary philosophers profess. But I think that we must start from them, and that we ought to depart from them only when we find good reason to do so.