four o'clock
She 's just going . We 've been waiting for you , to make up a prisoner 's base . '' While I had been going up the Avenue des Champs-Elysées , Gilberte had arrived by the Rue Boissy-d'Anglas , Mademoiselle having taken advantage of the fine weather to go on some errand of her own ; and M. Swann was coming to fetch his daughter . And so it was my fault ; I ought not to have strayed from the lawn ; for one never knew for certain from what direction Gilberte would appear , whether she would be early or late , and this perpetual tension succeeded in making more impressive not only the Champs-Elysées in their entirety , and the whole span of the afternoon , like a vast expanse of space and time , on every point and at every moment of which it was possible that the form of Gilberte might appear , but also that form itself , since behind its appearance I felt that there lay concealed the reason for which it had shot its arrow into my heart at four o'clock instead of at half-past two ; crowned with a smart hat , for paying calls , instead of the plain cap , for games ; in front of the Ambassadeurs and not between the two puppet-shows ; I divined one of those occupations in which I might not follow Gilberte , occupations that forced her to go out or to stay at home , I was in contact with the mystery of her unknown life . It was this mystery , too , which troubled me when , running at the sharp-voiced girl 's bidding , so as to begin our game without more delay , I saw Gilberte , so quick and informal with us , make a ceremonious bow to the old lady with the _ Débats _ -LRB- who acknowledged it with `` What a lovely sun ! You 'd think there was a fire burning . '' -RRB- speaking to her with a shy smile , with an air of constraint which called to my mind the other little girl that Gilberte must be when at home with her parents , or with friends of her parents , paying visits , in all the rest , that escaped me , of her existence .