On Sundays, Jarvis Lorry goes to visit the Manette family. He goes out of habit and because he has become a family friend.
Jarvis Lorry resurrected Dr. Manette by bringing him home from France, and he has come to appreciate the family. He likes to go to Soho, where the doctor and Lucie live in a “quaint” corner of London. Mr. Lorry does not have many friends.
On this certain fine Sunday, Mr. Lorry walked towards Soho, early in the afternoon, for three reasons of habit. (ch 6, p. 60)
Jarvis Lorry likes to go because “on fine Sundays” he often walks with Lucie and Dr. Manette before dinner. On “unfavorable Sundays” he stays home with them as “the family friend,” where he likes to spend time with them “talking, reading, looking out of window, and generally getting through the day” (p. 60). In addition, sometimes Jarvis has “his own little shrewd doubts to solve” and he finds the doctor’s household conducive to solving them.
This period is a relatively tranquil one for the Manette household, before the trouble starts. Jarvis Lorry is more than just a banker, he has become a friend. He counts himself as an important member of the household, in a way, since he had no small part in returning Dr. Manette.