The first principle of curiosity is the principle that comes spontaneously from the heart, and its growth is proportional to our feelings and knowledge.If a scientist were left on a deserted island with his instruments and books, and had to spend the rest of his life there, he would not bother himself to care about celestial theories, laws of gravitation, and differential calculus, perhaps he would His book will never be opened again, but he probably won't rest until he reaches the farthest corner of the island and knows how big the island is.Therefore, in our early learning, ignore knowledge that is not naturally attractive, and limit the scope of learning to those knowledge that instinctively prompts us to acquire.