Vronsky, meanwhile, in spite of the complete realization of what he had so long desired, was not perfectly happy. He soon felt that the realization o… - 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.

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.

When in doubt, my dear fellow, do nothing.

"He knew she was there by the rapture and the terror that seized on his heart. She was standing talking to a lady at the opposite end of the ground. There was apparently nothing striking either in her dress or her attitude. But for Levin she was as easy to find in that crowd as a rose among nettles. Everything was made bright by her. She was the smile that shed light on all round her. "Is it possible I can go over there on the ice, go up to her?" he thought. The place where she stood seemed to him a holy shrine, unapproachable, and there was one moment when he was almost retreating, so overwhelmed was he with terror. He had to make an effort to master himself, and to remind himself that people of all sorts were moving about her, and that he too might come there to skate. He walked down, for a long while avoiding looking at her as at the sun, but seeing her, as one does the sun, without looking."

Remember then: there is only one time that is important — Now! It is the most important time because it is the only time when we have any power. The most necessary man is he with whom you are, for no man knows whether he will ever have dealings with any one else: and the most important affair is, to do him good, because for that purpose alone was man sent into this life!