Jealousy is in a manner just and reasonable, as it tends to preserve a good which belongs, or which we believe belongs to us, on the other hand envy is a fury which cannot endure the happiness of others.
Francois de La RochefoucauldMost men expose themselves in battle enough to save their honor, few wish to do so more than sufficiently, or than is necessary to make the design for which they expose themselves succeed.
Francois de La RochefoucauldIt is not expedient or wise to examine our friends too closely; few persons are raised in our esteem by a close examination.
Francois de La Rochefoucauld