Without exercise, things can't be done; People can't cut and polish and never grow up. -Li Zhi
The rope can be sawed off, but water can throw stones. Practice hard and fight a protracted war. —— Guo Moruo
Although it is hard, it is difficult to blow out crazy sand when it is not golden. -Liu Yuxi
The edge of the sword comes from sharpening, and the fragrance of plum blossoms comes from bitter cold. anonymous
All greatness comes from hardships.
Emerson
God has put many obstacles in our way just to strengthen our will.
Tagore
Although they became great because of persistence, they also became great because of disaster.
Romain rolland.
Just as fruit needs not only sunshine, but also cool nights and cold rain to ripen, the cultivation of human character needs not only joy, but also trials and difficulties.
Blake
A group of cowards are cultivated in vain in prosperous times, and suffering is always the mother of strength.
-Shakespeare
Fire tries gold, but misfortune tries warriors.
Seneca
Difficulties are the textbook of life.
-Proverbs
Those things that can't kill me will make me stronger.
-Nietzsche
No matter what kind of sky is overhead, I am ready to withstand any storm.
byron
Suffering has trained some people and destroyed others.
Fuller
There is only one road to the truly great realm of mankind-the road of suffering.
-Einstein
Disaster is the first journey of truth.
byron
How is steel tempered? Steel is formed by burning in fire and highly cooling, so it becomes strong and fearless.
Ostrovsky.