It is only when we have renounced our preoccupation with "I," "me," "mine," that we can truly possess the world in which we live. Everything, provided that we regard nothing as property. And not only is everything ours; it is also everybody else's.
The man who wishes to know the "that" which is "thou" may set to work in any one of three ways. He may begin by looking inwards into his own particular thou and, by a process of "dying to self" --- self in reasoning, self in willing, self in feeling ...