1. Nothing is difficult in the world, as long as you are willing to climb.

it's from Mao Zedong's "Water Tune Song Tou Re-entering Jinggangshan".

Nothing is difficult in the world, as long as you are willing to make up your mind to climb it.

2. Heaven has given me a great responsibility, so I must first suffer from my mind, work hard on my bones and muscles, starve my body, and behave indiscriminately. Therefore, I can't be patient.

From "Born in Worry, Died in Happiness", selected from "Under Mencius' Apology"

Therefore, if God wants to put a heavy responsibility on someone, he must first make his mind miserable, his bones and muscles tired, his body empty and weak, and his every action unsatisfactory, so as to inspire his mind, make him patient and increase what he does not have.

3. People who travel far by sea should set a destination first, and the pointer on the way always points in this direction, so I'm afraid they will never reach it. -Li Dazhao

4. If human beings want to survive in the competition, they must struggle even more. -Sun Yat-sen

5. Make up your mind, be not afraid of sacrifice, overcome all difficulties and strive for victory. -Mao Zedong