Imagine a person with a gift of ridicule [He might say] First that a negative quantity has no logarithm; secondly that a negative quantity has no square root; thirdly that the first non-existent is to the second as the circumference of a circle is to the diameter.
![Imagine a person with a gift of ridicule [He might say] First that a negative quantity has no logarithm; secondly that a negative quantity has no square root; thirdly that the first non-existent is to the second as the](http://cdn.quoteddaily.com/images/augustus-de-morgan/imagine-a-person-with-a-gift-of-ridicule-he-might-say-first-that-a-negative-quantity-has-no-logarithm-secondly.jpg)