When Shakyamuni Buddha, Jesus Christ, Lao Tzu and Confucius lived in the world, even though many people did not like them and attacked them, they still talked about the Truth. Truth can never be diminished. The Truth they spoke of is still well-known today and has influenced many people.
Truth is never alone. They told the truth and didn't tell lies. Therefore, there must be enlightened people in the world who can realize their Truth. The students who had realized the Truth spread their teachings, making it more and more prosperous and influential. If there were no teachings from them, the world could not be as beautiful as it is now.