Without ignoring, or in any sense undervaluing, the numerous and interesting philosophical aspects of the subject now before us, I have dealt with the "will" in this book, from a purely practical point of view, as directly related to the everyday life of "all sorts and conditions of men." I have endeavored to show that, by cultivating the "will," strengthening it by constant and careful exercise, a man may attain the highest success in life that is possible to his natural ability, while, by neglecting to cultivate it, he will certainly fail to succeed at all. And I have also shown that the extent of the success or the failure is, in a very large degree, proportionate to the extent of such cultivation or neglect. It is true that a man may meet with what is called a "stroke of luck;" but it will surely be found that "luck," as a rule, shows a marked preference for those who have duly cultured and restrained their mental and moral faculties.