On the last page of one of the greatest novels of all time, Anna Karenin, Levin, one of the main characters in this wonderful and epic drama, finally discovers what I think is one of the best definitions of happiness

This new feeling has not changed me, has not made me happy and enlightened all of a sudden, as I dreamed it would…I shall still lose my temper with Ivan the coachman, I shall still embark on useless discussions and express my opinions inopportunely; there will still be the same wall between the sanctuary of my inmost soul and other people, even my wife; I shall probably go on scolding her in my anxiety and repenting of it afterwards; I shall still be as unable to understand with my reason why I pray, and I shall still go on praying - but my life now, my whole life, independently of anything that can happen to me, every minute of it is no longer meaningless as it was before, but has a positive meaning of goodness with which I have the power to invest it.”