Mr. Browne's October precept is "your deeds are your monuments." He explains that the saying originally appeared on an Egyptian tombstone and asks the students to write about what they think the precept means. August writes that it means that people should be remembered by the things they do, as actions are more important than anything else and will last longer than anything else.
This precept begins to lay the groundwork and the reasoning for August's kindness: he understands already the power of behaving kindly and helping others. Those are the kinds of things that people will remember.