Science has adapted itself entirely to the wealthy classes and accordingly has set itself to heal those who can afford everything, and it prescribes … - Leo Tolstoy

He soon felt that the fulfillment of his desires gave him only one grain of the mountain of happiness he had expected. This fulfillment showed him the eternal error men make in imagining that their happiness depends on the realization of their desires.

Quite often a man goes on for years imagining that the religious teaching that had been imparted to him since childhood is still intact, while all the time there is not a trace of it left in him.

I have lived through much, and now I think I have found what is needed for happiness. A quiet secluded life in the country, with the possibility of being useful to people to whom it is easy to do good, and who are not accustomed to have it done to them; then work which one hopes may be of some use; then rest, nature, books, music, love for one's neighbor -- such is my idea of happiness. And then, on the top of all that, you for a mate, and children perhaps -- what more can the heart of man desire?