If you persevere, the rotten wood will not be broken; if you persevere, the gold and stone can be carved. ——Xunzi

The edge of a sword comes from sharpening, and the fragrance of plum blossoms comes from the bitter cold. ——Lu You

No matter when, no matter what situation I encounter, I will never allow myself to be a little bit discouraged. ——Edison

Use indomitable perseverance to overcome all difficulties in a planned way. ——Mao Zedong

Victory belongs to the most perseverant. ——Napoleon

With sincerity, gold and stone are opened. ——Wang Chong