The best answer for this question would be:
1. Gerasim alone did not lie; everything showed that he alone understood the facts of the case and did not consider it necessary to disguise them, but simply felt sorry for his emaciated and enfeebled master.
2. Only Gerasim recognized it and pitied him. And so Ivan Ilyich felt at ease only with him.
These excerpts represent how Gerasim feels overall for Ivan and his situation.