In primary, secondary and high school, students must learn mathematics. Some of them learn mathematics for fun or for the sake of it, and others learn mathematics for grades or rewards in exams and competitions. Students must learn mathematics because it is useful in physics, chemistry, engineering, computer science, commerce, construction, accounting, geography, architecture, agriculture and medicine. Yes! We must learn mathematics because with its help we can decipher the hostile environment in which we live. We have the duty to contribute in every way to the learning of mathematics, because mathematics is an act of culture of human civilization.