Such are the vicissitudes of the world, through all its parts, that day and night, labor and rest, hurry and retirement, endear each other; such are the changes that keep the mind in action: we desire, we pursue, we obtain, we are satiated; we desire something else and begin a new pursuit.
Samuel JohnsonPhilosophers there are who try to make themselves believe that this life is happy; but they believe it only while they are saying it, and never yet produced conviction in a single mind.
Samuel Johnson