Kierkegaard later referred to his concept of choosing yourself as the single individual in "The Concept of Anxiety", June 17, 1844, and then in his "", August 31, 1844, and once again in "Upbuilding Discourses in Various Spirits", 1847. William James echoed Kierkegaard in his lecture on "The Sick Soul" where he wrote, "the man must die to an unreal life before he can be born into the real life." You are outside yourself and therefore cannot do without the other as opposition; you believe that only a restless spirit is alive, and all who are experienced believe that only a quiet spirit is truly alive. For you a turbulent sea is a symbol of life; for me it is the quiet, deep water. "Either/Or Part II" p. 144, HongAnxiety is a qualification of dreaming spirit, and as such it has its place in psychology. Awake, the difference between myself and my other is posited; sleeping, it is suspended; dreaming, it is an intimated nothing. The actuality of the spirit constantly shows itself as a form that tempts its possibility but disappears as soon as it seeks to grasp for it, and it is a nothing that can only bring anxiety. More it cannot do as long as it merely shows itself. The concept of anxiety is almost never treated in psychology. Therefore, I must point out that it is altogether different from fear and similar concepts that refer to something definite, whereas anxiety is freedom’s actuality as the possibility of possibility. For this reason, anxiety is not found in the beast, precisely because by nature the beast is not qualified as spirit. "The Concept of Anxiety", Nichol p. 42