For life is tendency, and the essence of a tendency is to develop in the form of a sheaf, creating, by its very growth, divergent directions among which its impetus is divided

Life does not proceed by the association and addition of elements, but by dissociation and division

Homo sapiens, the only creature endowed with reason, is also the only creature to pin its existence on things unreasonable

We regard intelligence as man's main characteristic and we know that there is no superiority which intelligence cannot confer on us, no inferiority for which it cannot compensate

Intelligence is the faculty of making artificial objects, especially tools to make tools

In short, intelligence, considered in what seems to be its original feature, is the faculty of manufacturing artificial objects, especially tools to make tools, and of indefinitely urging the manufacturece presents to him

The motive power of democracy is love

The eye sees only what the mind is prepared to comprehend

To exist is to change, to change is to mature, to mature is to go on creating oneself endlessly

Sex appeal is the keynote of our civilization