This sentence comes from Zeng Guofan.

Zeng Guofan was a famous minister and military strategist in the late Qing Dynasty. This famous saying emphasizes the importance of morality for success. A person's moral level is not enough to ensure success, and bad morals will definitely lead to failure. This sentence reflects Zeng Guofan's profound thinking and insight into human nature, and has become a famous saying that has been passed down to this day.