In its entirety, probably, it follows us at every instant; all that we have felt, thought and willed from our earliest infancy is there, leaning over the present which is about to join it, pressing against the portals of consciousness that would fain leave it outside.
Instinct perfected is a faculty of using and even constructing organized instruments; intelligence perfected is the faculty of making and using unorganized instruments.
Genius is that which forces the inertia of humanity to learn.
I cannot escape the objection that there is no state of mind, however simple, that does not change every moment.
An absolute can only be given in an intuition, while all the rest has to do with analysis.
Sex appeal is the keynote of our civilization.
To exist is to change, to change is to mature, to mature is to go on creating oneself endlessly.
Wherever anything lives, there is, open somewhere, a register in which time is being inscribed.
The motive power of democracy is love.
In laughter we always find an unavowed intention to humiliate and consequently to correct our neighbour.