Tension without cosmic pulsation to animate it is the transition to nothingness

When the Englishman speaks of national wealth he means the number of millionaires in the country.

Peace is a desire, war is a fact; and history has never paid heed to human desires and ideals.

Every action alters the soul of the doer.

The mathematic, then, is an art. As such it has its styles and style periods. It is not, as the layman and the philosopher (who is in this matter a layman too) imagine, substantially unalterable, but subject like every art to unnoticed changes form epoch to epoch. The development of the great arts ought never to be treated without an (assuredly not unprofitable) side-glance at contemporary mathematics.

It doesn't really matter what one writes into a constitution. The important thing is what the collective instinct eventually makes of it.

I maintain that to-day many an inventor, many a diplomat, many a financier is a sounder philosopher than all those who practise the dull craft of experimental psychology.