Some of my best thoughts are contained in this book. Whenever I would think a thought that I thought had better remain unthought, I would omit it from this book. For that reason the book is not so large as I had intended. When a man coldly and dispassionately goes at it to eradicate from his work all that may not come up to his standard of merit, he can make a large volume shrink till it is no thicker than the bank book of an outspoken clergyman.