1. Newton

At the age of 12, he transferred from a rural primary school to the city to study. He ranked low in the class and his classmates looked down on him. Once, a classmate who was stronger than him and better at homework bullied him unreasonably. Although he was usually afraid of this classmate, Newton rose up to resist and forced the classmate into a corner, and the classmate had to give in.

Newton also saw a truth from this incident: as long as you make up your mind, you can conquer it. So he began to use this energy in his studies. After diligent study, Newton laid a solid foundation in mathematics. Soon, Newton invented differential calculus at the age of 22 and integral calculus at the age of 23, making great contributions to the cause of human mathematics.

2. Geng Yan

During the Eastern Han Dynasty, Geng Yan was a famous general under Liu Xiu, Emperor Guangwu of Han Dynasty. Once, Liu Xiu sent him to attack the local powerful Zhang Bu, and the battle was fierce. Later, Geng Yan was hit in the thigh by a flying arrow. He drew his sword and cut off the arrow, and continued fighting. Finally, Geng Yan defeated the enemy.

Emperor Guangwu of Han Dynasty praised Geng Yan. And he said to him with emotion: "When the general was in Nanyang, he proposed to attack Zhang Bu and pacify Shandong. At first, he thought the plan was too big and worried that it would be difficult to realize. Now I know that for people with ambition, things can succeed. "

3. Edison

In order to develop electric lights, Edison often worked more than ten hours a day in the laboratory, sometimes testing for several days in a row. After he invented carbon filament as a filament, he He tried more than 6,000 plant fibers one after another, but he never gave up.

Finally, bamboo filaments were used, burned in a high-temperature sealed furnace, and then processed to obtain carbonized bamboo filaments, which were installed into the light bulb, thus increasing the vacuum degree of the light bulb again. The light can be continuously lit for 1,200 hours. . "Hard work pays off" and the electric light was finally invented on October 21, 1879.