The family unit is the institution for the systematic production of mental illness.

For the person and for the species love is the form of behavior having the highest survival value.

Love, for too many men in our time, consists of sleeping with a seductive woman, one who is properly endowed with the right distribution of curves and conveniences and one upon whom a permanent lien has been acquired through the institution of marriage.

The moments of happiness we enjoy take us by surprise. It is not that we seize them, but that they seize us.

The measure of man's humanity is the extent and intensity of his love for mankind.

The scientist believes in proof without certainty.

The scientist believes in proof without certainty, the bigot in certainty without proof.