Gustave Flaubert said this quote

Frederick expected that he would have felt spasms of joy; but the passions grow pale when we find ourselves in an altered situation; and, as he no longer saw Madame Arnoux in the environment wherein he had known her, she seemed to him to have lost some of her fascination; to have degenerated in some way that he could not comprehend—in fact, not to be the same. He was astonished at the serenity of his own heart./... sentimentele slăbesc cînd le schimbi locul...