First of all, scientists who can be called geniuses are far smarter than ordinary people, such as Einstein's theory of relativity. Although we can all understand it simply now, no one could understand it at that time, even as scientists, they could not understand what Einstein was thinking. They think too widely, and there are too many design secrets, which are often related to future nuclear weapons. However, people at that time could not see that scientists were pursuing science.
Actually, they love science, but they know that these research things, once exposed, will bring harm to many countries, such as nuclear weapons. These are terrible weapons. At that time, there was a great possibility of war between countries. Tesla has countless research results in his life, and he himself knows that if these manuscripts during his research are used by others, it is very likely to create terrible weapons.
When it is used in war, Tesla himself will become a sinner through the ages. All he wants is the scientific truth. He doesn't want to fight at all, and he doesn't want his research results to be used as a powerful weapon to hurt others. These are unnatural, so before his death, Tesla chose to destroy all the manuscripts himself to ensure that no one would find out about his research on these weapons, and also for the safety of the people. Such a scientist is very great and worthy of respect.