If an author takes a moment to reflect, he will discover that he always has something to teach someone. And if, instead of following the irresistible tendency to imitate what others have done, he focuses on teaching, to the best of his ability but with sincerity and purity of intention, what he knows to those who do not, he will surely gain at least one good reader. But it turns out that, in doing so, he discovers that he knows more than he thought, learns more than he knew before, and manages, all at once, to grow and create something of value.