Those who lack the courage will always find a philosophy to justify it.

Real nobility is based on scorn, courage, and profound indifference.

For centuries the death penalty, often accompanied by barbarous refinements, has been trying to hold crime in check yet crime persists. Why? Because the instincts that are warring in man are not, as the law claims, constant forces in a state of equilibrium.

Men are convinced of your arguments, your sincerity, and the seriousness of your efforts only by your death.

We get into the habit of living before acquiring the habit of thinking. In that race which daily hastens us towards death, the body maintains its irreparable lead.

There will be no lasting peace either in the heart of individuals or in social customs until death is outlawed.

You cannot create experience. You must undergo it.

When you have really exhausted an experience you always reverence and love it.

To insure the adoration of a theorem for any length of time, faith is not enough, a police force is needed as well.

To be famous, in fact, one has only to kill one's landlady.