"To those who ask what the infinitely small quantity in mathematics is, we answer that it is actually zero. Hence there are not so many mysteries hidden in this concept as they are usually believed to be"

In this quote, mathematician Leonhard Euler is addressing the principle of the definitely small amount in mathematics. He mentions that this amount is actually equal to zero, meaning that it holds no worth or significance. This may seem counterproductive, as the concept of something being infinitely little suggests that it is still a measurable amount. Nevertheless, Euler argues that this concept is not as mystical as it is typically thought to be. By equating it to no, he is simplifying the concept and getting rid of any confusion or complexity surrounding it. In essence, he is saying that the infinitely little quantity is not something to be puzzled over, but rather something that can be easily understood and calculated.