“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.” 

― Leo Tolstoy, Anna Karenina