1. Edison spent a full ten years developing batteries. During this period, he suffered constant failures and persisted. After about 50,000 experiments, he finally succeeded. He invented the battery and was awarded by people. Known as the "King of Inventions".

2. Li Bai, the great poet of the Tang Dynasty, did not like reading when he was a child. One day, while the teacher was not at home, he quietly slipped out to play. He came to the river at the foot of the mountain and saw an old woman grinding an iron pestle on a stone. Li Bai was very puzzled and asked: "Old woman, what are you doing grinding the iron pestle?" The old woman said, "I am grinding a needle." Li Bai asked in surprise: "Oh! How can the iron pestle be ground into a needle when it is so thick?"

The old woman said with a smile: "As long as you grind it every day, the iron pestle can be ground finer and finer. Are you afraid that it will not grind into a needle?" After hearing this, Li Bai thought of himself, felt ashamed, turned around and ran back to the study room. . From then on, he kept in mind the principle that "as long as you work hard, an iron pestle can be ground into a needle", studied hard, and finally became a great poet and was called the "Immortal of Poetry".

3. Leonardo da Vinci, a famous painter during the European Renaissance, was fond of painting since he was a child. His father sent him to Florence, a famous city in Italy at that time, to learn from the famous painter Frochio. The teacher asked him to start by painting eggs. He painted one after another for more than ten days.

Seeing that he was a little impatient, the teacher said to him: "Don't think that drawing eggs is easy. You must know that no two eggs in 1,000 are exactly the same; even if it is the same egg, as long as it is The shape will look different if you change the angle, and the oval outline of the egg will be different.

So, it takes a lot of hard work to express it perfectly on the drawing paper." , Leonardo da Vinci studied sketching attentively, and after a long period of diligent and arduous artistic practice, he finally created many immortal paintings.

4. Marx, the mentor of the world proletarian revolutionary movement, spent more than 40 years writing "Das Kapital" and read a large amount of materials in the British Museum. A piece of the cement floor was worn out under the seat where he sat. layer of cement. Through his unremitting efforts, Marx finally wrote the "Das Kapital" needed by the proletarians around the world.

5. Helen Keller was blind in both eyes and deaf in both ears, but she worked hard to transform from a sympathetic and unknown little girl into a strong woman respected by the whole world. If life is really unfair, then life is extremely unfair to her.

She can give up her dream and hide in a dark corner and cry loudly, and no one will blame her. She can also lie on the bed or sit in a wheelchair and be served by others like a vegetable.

But she didn't do any of this. She just struggled to learn Braille with the help of the teacher and touched things, relying only on her never-give-up belief and perseverance. She painted her ideal sky with the brightest colors in life.