Leo Tolstoy said this quote

“ Vronsky meanwhile, in spite of the complete fulfilment of what he had so long desired, was not completely happy. He soon felt that the realization of his longing gave him only one grain of the mountain of bliss he had anticipated. That realization showed him the eternal error men make by imagining that happiness consists in the gratification of their wishes. When first he united his life with hers and donned civilian clothes, he felt the delight of freedom in general, such as he had not before known, and also the freedom of love—he was contented then, but not for long. Soon he felt rising in his soul a desire for desires—boredom. Involuntarily he began to snatch at every passing caprice, mistaking it for a desire and a purpose. ”