This sentence comes from The Analects of Confucius. The so-called "virtue" here refers to a moral person. "Not lonely" means not feeling lonely; In other words, a moral person will not feel lonely. Why? Confucius said that this is because "there must be neighbors." Literally, "neighbor" means "neighbor". As we all know, neighborhood relationship is one of the most contact and important interpersonal relationships in life. As the saying goes, "a distant relative is better than a close neighbor", and close and harmonious neighborhood relationship is an important condition for a happy life. From this perspective, "neighborhood" can be extended to become an intimate relationship between neighborhoods.

Therefore, "Germany is not alone, there must be neighbors" means that a moral person will not be lonely, but will be accompanied by like-minded people.