PEACE OF MIND.
Though peace of mind does not constitute happiness, happiness cannot exist without it; our serenity being the result of our own exertions, while our happiness is dependent on others: hence the reason why it is so rare; for, on how few can we count? Our wisdom, therefore, is best shown in cultivating all that leads to the preservation of this negative blessing, which, while we possess it, will prevent us from ever becoming wholly wretched.