You shall love the proselyte for you were strangers in the land of Egypt. (Deut. 10:19)
Aaron was very nervous. He had just moved to a new community and wasn't sure what it would be like. Would he fit in? Would the people be nice? He walked in to Shul nervous and tense; it was his first time attending. He looked around hoping someone would come over but no one said a word to him. He found an empty seat and sat down. A minute later a man walked over and tapped him on the shoulder. Aaron felt excited that finally someone would make him feel at home.
"I'm sorry," the man said, "but you're sitting in someone's seat. Please vacate it."
Aaron stood up and remained in the aisle; feeling extremely uncomfortable...
Although converts are included in the commandment to love one's fellow Jew, the Torah nevertheless added an additional mitzvah to love the convert who is a stranger to his new environment. The Chinuch broadens this commandment to include all strangers, such as a newcomer to a neighborhood, a new student in a school, or a new employee.
When someone is in a new situation he feels insecure and uncomfortable. Just doing a small thing such as approaching him with a warm smile and asking him his name may help him in a big way. "Although to the world you may be just one person, but to one person you may just be the world!"