"If escapes the oblivion he so much dreaded, it will be neither as doctor nor as mathematician, but because, at the end of his life, he wrote a little book about himself, and wrote it in the right way. He had always been interested in the subject; and fragments of autobiography occur in most of his works. Now he gives it undivided attention, and endeavours, through fifty-four chapters, to describe his character, constitution, and fortunes. He might have been to us merely a person of some importance in his time—a funny old man who pottered about, four centuries ago, besides the springs of science. Hitherto his egotism has rescued him. He is so supremely interesting to himself, that he cannot but interest others; and his little book ranks among the great autobiographies of the world."