But we cannot hope to change the conditions of life; and one of its conditions is, as I have said, that we cannot foresee dangers. No matter how vividly they are described to us, no matter how eagerly those who love us try to warn us of peril, we cannot escape. For that is the essence of life--experience; and though we cannot rejoice when we are in the grip of it, and when we cannot see what the end will be, we can at least say to ourselves again and again, "this is at all events reality--this is business!" for it is the moments of endurance and energy and action which after all justify us in living, and not the pleasant spaces where we saunter among flowers and sunlit woods. Those are conceded to us, to tempt us to live, to make us desire to remain in the world; and we need not be afraid to take them, to use them, to enjoy them; because all things alike help to make us what we are. II SHAPES OF FEAR Now as I look back a little, I see that some of my worst experiences have not hurt or injured me at all. I do not claim more than my share of troubles, but "I have had trouble enough for one," as Browning says,--bereavements, disappointments, the illness of those I have loved, illness of my own, quarrels, misunderstandings, enmities, angers, disapprovals, losses; I have made bad mistakes, I have failed in my duty, I have done many things that I regret, I have been unreasonable, unkind, selfish. Many of these things have hurt and wounded me, have brought me into sorrow, and even into despair. But I do not feel that any of them have really injured me, and some of them have already benefited me. I have learned to be a little more patient and diligent, and I have discovered that there are certain things that I must at all costs avoid. But there is one thing which seems to me to have always and invariably hampered and maimed me, whenever I have yielded to it, and I have often yielded to it; and that is Fear. It can be called by many names, and all of them ugly names--anxiety, timidity, moral cowardice. I can never trace the smallest good in having given way to it. It has been from my earliest days the Shadow; and I think it is the shadow in the lives of many men and women. I want in this book to track it, if I can, to its lair, to see what it is, where its awful power lies, and what, if anything, one can do to resist it. It seems the most unreal thing in the world, when one is on the other side of it; and yet face to face with it, it has a strength, a poignancy, a paralysing power, which makes it seem like a personal and specific ill-will, issuing in a sort of dreadful enchantment or spell, which renders it impossible to withstand. Yet, strange to say, it has not exercised its power in the few occasions in my life when it would seem to have been really justified. Let me quote an instance or two which will illustrate what I mean.