Another sign of a person's nature is said to be found in his choices in architecture and furniture. A person who really would like to live in a castle would probably be more at home in the Middle Ages. (Para. 9)
Meaning: People believe that what furniture a person chooses also tells us his nature. If a person really would like to live in a castle, he would feel more comfortable in the Middle Ages.
be /feel at home: feel comfortable or relaxed in a place or situation
They were warm and friendly and I felt at home right away. 他们很热情友好，我很快就感到无拘无束了。
By the end of the year she was beginning to feel at home in her new job. 到年底前，她已经开始对新工作感到很熟悉了