I am delighted to know that Principia Mathematica can now be done by machinery. . . I am quite willing to believe that anything in deductive logic can be done by machinery.

How about Pithecanthropus Erectus? Was it really he who ate the apple? Or was it Homo Pekiniensis?

None but a coward dares to boast that he has never known fear.

The demand for certainty is one which is natural to man, but is nevertheless an intellectual vice. If you take your children for a picnic on a doubtful day, they will demand a dogmatic answer as to whether it will be fine or wet, and be disappointed in you when you cannot be sure.

A good world needs knowledge, kindliness, and courage; it does not need a regretful hankering after the past or a fettering of the free intelligence by the words uttered long ago by ignorant men.

If one lived for ever the joys of life would inevitably in the end lose their savour. As it is, they remain perennially fresh.

From that awful encounter of the soul with the outer world, enunciation, wisdom, and charity are born; and with their birth a new life begins. To take into the inmost shrine of the soul the irresistible forces whose puppets we seem to be - Death and change, the irrevocableness of the past, and the powerlessness of Man before the blind hurry of the universe from vanity to vanity - to feel these things and know them is to conquer them.