Physical suffering apart, not a single sorrow exists that can touch us except through our thoughts.

The dog is the only living being that has found and recognizes an indubitable, tangible and definite god. He knows to whom above him to give himself. He has not to seek for a superior and infinite power.

Justice is the very last thing of all wherewith the universe concerns itself. It is equilibrium that absorbs its attention.

The dog who meets with a good master is the happier of the two.

The decent moderation of today will be the least of human things tomorrow. At the time of the Spanish Inquisition, the opinion of good sense and of the good medium was certainly that people ought not to burn too large a number of heretics; extreme and unreasonable opinion obviously demanded that they should burn none at all.

To have known how to change the past into a few saddened smiles-is this not to master the future?

All our knowledge merely helps us to die a more painful death than the animals that know nothing. A day will come when science will turn upon its error and no longer hesitate to shorten our woes. A day will come when it will dare and act with certainty; when life, grown wiser, will depart silently at its hour, knowing that it has reached its term.