Now I have something to tell you that seems too utterly good to be believed, and yet keeps getting better all the way along. It is this: the Master has planned that your life journey shall be a personally conducted one on this ideal plan. It was said a night or two ago that the Master has thought into your life and made arrangement for all its needs. Let me add to-night this further fact: _He has arranged with His best friend, who is an experienced traveler, to go with you and devote Himself wholly to your interests._ Some of you, I am afraid, will smile, and think that I am just indulging in a fancy sketch--drawing on my imagination. And so I pray our Master to burn into our hearts that it is plain, matter-of-fact truth, for every day life. I would say that it is cold fact were it not that such a fact can never be cold. Power is a Person. Each of these talks, you have noticed, has led up to the one idea of surrender. That word surrender stands for one side only of a transaction--_our_ side. As in all transactions, there is another side--_His_ side to whom the surrender is made. To-night we want to take a step in advance and talk about the part which Jesus has in this surrender-transaction. All truth goes in pairs. The partnership word with surrender is mastery. Surrender on my part is followed by mastery on His part. There are two personalities in this transaction. You are one: an important one, but only one. To-night we shall try to get a better acquaintance with the other One. The One who assumes control of the surrendered life, who is to be our personal guide and friend. Will you recall again the Master's good-bye Olivet message, and notice just what it means? Listen to the very words: "Ye shall receive power." Let me ask you--what is power? Will some one give a simple definition of that word? There are four words, four of the commonest, most familiar in our language, for which I have not been able to find a definition. If some one here can help me I will be grateful. They are the words life, light, love, and power. What do they mean? I can find plenty of statements _about_ them, descriptions of what each of these is like, but no definitions. What is life? Recently I looked into the statement regarding life made by three of the most famous English scientists of the nineteenth century, whose names are household words. I read them carefully. The wisdom and keenness of observation they show are amazing. But when I had studied and read them repeatedly I found myself asking--what is life? They have described rarely the functions and characteristics of life, but have not told what it is. They do not seem to know. Do you?