This sentence came from a poem in the Tang Dynasty poet Li Bai's " Wine to Drink ". The original text was: " Don't worry about the road ahead without a confidant. Who in the world doesn't know you?" " Don't worry about the future without a confidant. Who in the world doesn't know you?" This sentence meant that one shouldn't worry about the future without a confidant because everyone in the world knew who they were! This sentence expressed the poet Li Bai's self-confidence and open-minded feelings. He believed that even in the vast sea of people in the world, he would not be drowned because everyone had their own value and talent, and he believed that his talent was enough to become the best among the people. This sentence could also be extended to a person who should not be afraid of loneliness and believe that in the future, there will always be people who appreciate their value and talent and become bosom friends with them.