Man is the only animal who causes pain to others with no other object than wanting to do so.

The present is the only reality and the only certainty.

If I maintain my silence about my secret it is my prisoner...if I let it slip from my tongue, I am ITS prisoner.

It is only a man's own fundamental thoughts that have truth and life in them.

Every hero is a Samson. The strong man succumbs to the intrigues of the weak and the many; and if in the end he loses all patience he crushes both them and himself.

The person who writes for fools is always sure of a large audience.

Our civilized world is nothing but a great masquerade. You encounter knights, parsons, soldiers, doctors, lawyers, priests, philosophers and a thousand more: but they are not what they appear - they are merely masks... Usually, as I say, there is nothing but industrialists, businessmen and speculators concealed behind all these masks.