A happy life consists in tranquillity of mind.

The diseases of the mind are more and more destructive than those of the body. [Lat., Morbi perniciores pluresque animi quam corporis.]

In a disturbed mind, as in a body in the same state, health can not exist. [Lat., In animo perturbato, sicut in corpore, sanitas esse non potest.]

The forehead is the gate of the mind. [Lat., Frons est animi janua.]

The cultivation of the mind is a kind of food supplied for the soul of man. [Lat., Animi cultus quasi quidam humanitatis cibus.]

Sensual pleasures have the fleeting brilliance of a comet; a happy marriage has the tranquillity of a lovely sunset.