Charles Dodgson wrote on algebra, geometry, and trigonometry—but what immortalized his name were the books of fancy written in the language of children!
From Coronet magazine
On the afternoon of one fine spring day, Princess Beatrice, youngest daughter of Queen Victoria, received a children's book, elegant in appearance; and how great was her astonishment when she opened the book to find on the first page the author's good wishes together with his signature, and to find all the pages adorned with bright colored pictures and with the rich imagination that accompanied the events of the wonderful fairy tale...
Queen Victoria's admiration was no less than that of the little princess, for the book took a high place in her esteem, and she at once asked her chief custodian to bring her copies of all the books from this author's pen...
And how great was her astonishment when she found among this man's works books on algebra, geometry, and trigonometry!! Thus she was the first to discover that Lewis Carroll—who had the merit of bringing happiness and delight into the hearts of thousands of children through their reading of his companionable fairy tales—was himself a professor of mathematics at Oxford University, known in his private life as Charles Dodgson!
And even today, when we read this author's delightful books of fancy for children, we find it hard to believe that this man could treat with such success deep mathematical problems and theories! And introduce certain reforms into the science of mathematics and refute certain others!
The contradiction between this man's two personalities was very great indeed... The bashful professor who taught at Oxford University in no way resembled the merry, light-hearted man who wrote the famous "Alice" stories for children!
The first to inspire Carroll with these stories, and to discover in him this overflowing bent and this splendid, gushing imagination,