Activity and Happiness
Our passion for some sort of activity reaches a point of feverish and uncontrollable impatience; we all long for some serious occupation, many of us are full of an ardent desire to do good, to be of some use, and we gradually begin to realize that happiness is not the same thing as being able to afford to sit about twiddling one's thumbs or just to do something for the sake of a change when the occasion arises, but consists of continual and tireless activity and the development of all faculties and capabilities in practice.
Fiodor Dostoievski, in 'Occasional Writings'