Broadly speaking, the soul is also a substance. As for what substance it is, current science cannot explain it. If you must give some conclusion, it can be said to be energy.
From Einstein's theory, it can be understood that matter and energy are two manifestations of the same existence, because energy and matter can be transformed into each other, so what is energy?
Soul is essentially an energy body in the form of energy, so it can only be far-fetched.
Let me say a few more words about science:
First of all, science is a way to know the world, in order to improve the cognitive level and living standard of human beings.
But I think the current education in our country gives people a great misunderstanding that science is the only way to understand and transform the world. This actually caused a superstition, scientific superstition. You know, what we call "science" now is just one of the developed ways to understand the world in the West. Attention is one, not the only one! However, in the past few hundred years, the west has been greatly enriched by its crazy demand for nature, which has pushed up the material desire of human beings, thus leading to the worship and superstition of science in the west.
Secondly, a lot of human knowledge can't be scientifically explained now, and the most common ones are meridians and acupoints of traditional Chinese medicine. So far, scientific experiments have studied quarks and neutrinos at the microscopic level, but still can't find meridians and acupoints. But people in ancient China knew that it had been used for thousands of years. You think it's science? No matter how people in China know, science can't explain what happened thousands of years ago, which shows that science itself is limited. There are many similar examples abroad, such as how the pyramids in Egypt were built. Who made the crop circles in England? Who carved Stonehenge on Easter Island? Wait a minute.
Tell me another true story I experienced. Many years ago, in my hometown of Guizhou, I once saw a child crying inexplicably. For several days in a row, I went to the big hospital in the capital of Guiyang, found no problems, and took a lot of various medicines. The villagers said that the child lost his soul in a ghost, so his parents had to go back to the countryside and ask an old man in the village to drink some water, say a spell and do a ceremony to exorcise ghosts and evoke spirits. After a while, the child stopped crying and slept all night, and nothing happened the next day. I have specially studied the so-called rich water of the elderly, that is, the well water in the village, which is taken out from the water tank at the scene of the children's home. While chanting, the old man burned a yellow paper symbol and threw it into a bowl filled with water to melt. This is what he called water symbol. Paper symbol is a common cursive paper, yellow and yellow, which is rare in cities. The old man drew some pictures on it with a brush as long as he could understand them. The old man put water on the child's chest, back and forehead, and continued chanting. I can't hear myself clearly, but I can understand a few words occasionally, as if praying for the ghost to leave the child's body, saying that the child is too young, no matter what sins he has had before, he will ask for it when the child grows up. There are many taboos in the country. I didn't dare to ask more questions at that time, and I didn't dare to ask the elderly.
I have seen such a complete process and the real effect. But it can't be explained by "modern science"