1. Chen Yi: Looking at many things in ancient and modern times, success began with humility and failure resulted from extravagance.

2. Sima Guang: It is easy to go from frugality to luxury, but it is difficult to go from luxury to frugality.

3. Zhang Yong: If the debauchery fails, the body will suffer disaster if it is full of excess.

4. Lu Xun: If there are too many comparisons, desires will expand; if there are too many comparisons, the mentality will often be unbalanced.

5. Hugo: Half of the fatigue of life comes from survival and half from comparison.