"I could wish that men would consider three things which are within themselves. These three things are quite different from the Trinity, but I mention them in order that men may exercise their minds and test themselves and come to realize how different from it they are. The three things I speak of are: to be, to know, and to will. For I am, and I know, and I will. I am a knowing and a willing being; I know that I am and that I will; and I will to be and to know. In these three functions, therefore, let him who can see how integral a life is; for there is one life, one mind, one essence. Finally, the distinction does not separate the things, and yet it is a distinction."
January 1, 1970
https://en.wikiquote.org/wiki/Confessions_(Augustine)