The professor talked with a child who had suicidal thoughts.

The professor first asked the boy to draw a tree on a piece of white paper.

Professor: If you were asked to plant a tree, what would you do?

Boy: hmm ... of course, to plant a tree is to bury its roots in the soil, let them absorb nutrients from the soil, and then water it properly, then the tree will live.

Professor: You speak very well! Do you know that each of us has roots like this tree? The root of the tree of life, that is, what are the facts of life?

Boy: Well, nobody told me.

Professor: A man bought a welfare lottery ticket with two yuan. After randomly selecting the number, it won the grand prize of 6.5438+0 million. What does this mean?

Boy: How lucky he is!

Professor: Yes, yes, we say he is lucky, because buying lottery tickets is not like saving money in this bank, and not everyone will win the prize. There are hundreds of millions of planets in the vast universe, but so far, life has not been found on other planets except the earth. What does this mean?

Boy: This shows that life is not as ubiquitous as stone.

Professor: You are absolutely right! The existence of life requires extremely strict conditions, such as water, air and suitable temperature. The earth is like a winning lottery ticket, just with these conditions, so life appears here. You have not become a stone on Mars, a grain of sand on the moon, but a life on the earth. What does this mean?

Boy: Well, that's lucky!

Professor: Yes! We are the first lucky people to come to the earth. A famous person once said that life is an irreplaceable wealth in the universe. The age of the earth is 4.6 billion years. There have been 3.8 billion years of life on the earth, while human beings have only appeared for 3 million years. From the initial life to the appearance of human beings, it has experienced a long evolution process of 3.797 billion years. The evolution path of life is single cell, multi-cell, mammal, primate, and finally evolved into an adult. According to statistics, there are 30 million biological species on the earth, including low-level fungi, middle-level animals and plants, and the highest-level humans. You didn't become a grass, you didn't become a pig, but you came to this world as the highest level of mankind. What do you think this is?

Boy: Wow, this is another lucky moment!

Professor: Yes, being human is the second lucky thing. Man is the highest product of the material world and the highest level of life evolution. Do you know how you came into being?

Boy: Mom said I picked it up from the trash can. ...

Professor: Tell me how you came into being. The mother produces one egg at a time, while the father produces about 200 million sperm. Only one of the 200 million sperm can combine with an egg, and all the other sperm die. Therefore, in this competition between sperm and eggs, the chance of producing you is one in 200 million. From 15 to 50, my mother has laid about 450 eggs. Except for 10 pre-wedding eggs, there are about 300 eggs. You may be the first, or you may be the product of the combination of the nth egg and one of the 200 million sperm. Then in the whole marriage process of parents, the chance of owning you is one in 60 billion Once you are born, the other 60 billion children who may become your brothers and sisters cannot be born. Isn't it lucky that the birth probability is so small?

Boy: How lucky I am!

Professor: Yes, being yourself is the third lucky thing. In addition, the structure of human life is the most advanced, complex and exquisite of all life types.

Boy: So our body structure is very complicated.

Professor: Yes! Man is an extremely complex and sophisticated organism composed of 60 trillion cells. Every cell of human beings is a chemical plant, which is composed of a liquid bilayer lipid. There are mitochondria, microsomes and Golgi apparatus in the cytoplasm, and 23 pairs of chromosomes in the nucleus determine cell division. These cells form functional organs such as digestion and respiration, which are coordinated by the nervous and endocrine systems. All cells and functions of the human body are ultimately dominated and regulated by about 40,000 genes composed of about 3 billion base pairs.

Boy: How do we compare with gorillas?

Professor: That's a good question! Among biological species, gorillas, which are second only to humans in evolution, share 99% of the genes with humans, but their functions are quite different. 500 thousand years ago, ancestors and orangutans were brothers living in the forest, but what did orangutans do after 500 thousand years? It didn't drive the scarlet car? Is it sitting in the "Scarlet Room" and playing "Scarlet Computer"?

Boy: Haha, no.

Professor: Has it made the simplest tools since 500,000 years ago?

Boy: I don't know.

Professor: So, what can it do? Orangutans can only do two advanced and complicated movements. First break branches, dip in saliva, and stick termites in the hole to eat; The second is to mash and mix fruits and vegetables, which it thinks will make the taste better.

Boy: Yes, I have seen gorillas do this in the zoo.

Professor: So what did people do? Numerous man-made articles have been produced, which have extended people's organizational functions, changed the internal environment, and met and developed people's needs. People can't outrun horses, but they invented cars, trains, planes and rockets, leaving horses far behind. Man's naked eye vision is not as good as that of an eagle, but he invented a telescope to see farther than an eagle, and a microscope to see more carefully than an eagle. All this depends on the fact that the human brain has one more part than all animals-the cerebral cortex. It is the creative function of the cerebral cortex that makes people develop from animals passively dominated by the environment into masters of the earth who can actively dominate the environment.

Boy: Dude, that's great!

Professor: According to the research of scientists, humans only use the function of 1%- 10%. If their potential is fully developed, they can learn 40 foreign languages, get 12 doctorates and recite a thick encyclopedia. Do you think Li is not strong?

Boy: Awesome, awesome!

Professor: Jingdezhen has a very valuable kind of porcelain, which is called thin-embryo porcelain. The vase made of it is exquisite, the bottle wall is as thin as paper, which is extremely expensive but fragile. Human life is also like thin-walled porcelain, which is vulnerable. Inhaling peanuts and gas into the respiratory tract can be fatal.

Boy: People are fragile, too. ...

Professor: The value of many things in the world can be calculated by money, but human life is too expensive to be calculated by money. If it must be counted, then you can imagine that it costs 200 thousand to change a kidney, and you have to use expensive anti-rejection drugs to maintain your life after kidney replacement. It costs 300 thousand to transplant a little bone marrow. In this way, the total price of a human organ is formed by adding up the prices of various parts of human tissue. If you add the potential price, it must be an amazing astronomical figure! What does this mean?

Boy: It's expensive!

Professor: People are the most precious, and human life is the most precious in the universe. At the same time, human life is a process that will never return; Human metabolism is going on all the time. Once a person has passed puberty, he will never return to adolescence. There is only one life, unlike people who can wake up when they are asleep. Once a living thing dies, it cannot be resurrected. Do you think it is precious?

Boy: Very precious!

Professor: Of all the living things on earth, human beings are the only civilized animals with shame and dignity. Animals are savage. They don't care about these things. They move naked. People come from animals, but with the evolution of human beings, people are getting farther and farther away from barbarism and the degree of civilization is getting higher and higher. With the development of civilization, people have a sense of courtesy, honor, shame and value judgment of truth, goodness and beauty that animals do not have. All these make people not only an organism with physiological functions, but also a sacred organism with dignity.

Boy: So, human life is the most sacred!

Professor: You are great! Can you sum up what I said earlier?

Boy: Well, human life is the luckiest, the most precious and the most sacred.

Professor: You summed it up very well! How are you feeling? Tell me.

Boy: I didn't know life before. I don't know that human life is the luckiest, most precious and most sacred in the universe, so I have been thinking about death, thinking about death, thinking that life can be disposed of casually.

Professor: What will you do in the future?

Boy: I will never say that I want to die again, which worries my mother. I should cherish life, because human life is the luckiest, most precious and most sacred in the universe!