It is perhaps more necessary to formulate the warning that what is here called self-knowledge and pronounced to constitute the very essence of the spirit that is in man, is far removed from what sometimes bears its name, the extended and minute acquaintance by the individual mind with its individual peculiarities or idiosyncrasies, its weaknesses and vanities, its whims and eccentricities; nor is it to be confused with the still wider acquaintance with those that make up our common human nature in all its folly and frailty which is sometimes called 'knowledge of human nature'; no, nor with such knowledge as psychological science, with its methods of observation and induction and experiment, offers or supplies. It is knowledge of something that lies far deeper within us--'the inward man', which is not merely alike or akin but is the same in all of us; beneath all our differences, strong against all our weaknesses, wise against all our follies, what each of us rightly calls his true self and yet what is not his alone, but all men's also. As we reflect upon it duly, what discloses or reveals itself to us is a self which is both our very own and yet common or universal, the self of each and yet the self of all. The more we get to apprehend and understand it, the more we become and know ourselves, not so much as being but as becoming one with one another; the differences that sunder us in feeling and thought and action melting away like mist. The removal of these differences is just the unveiling of it, in which it at once comes to be and to be known. In coming to know it we create it. The unity of the spirit thus becomes and is known as indubitable fact, or rather (I must repeat) not as fact, as if it were or were anything before being known, but as something which is ever more and more coming to be, in the measure in which it is coming to be known--known to itself. For this is the hard lesson of modern philosophy, that our inmost nature and most genuine self is not aught ready-made or given, but something which is created in and by the process of our coming to know it, which progresses in existence and substantiality and value as our knowledge of it progresses in width and depth and self-assurance. The process is one of creative--self-creative--evolution, in which each advance deposits a result which prescribes the next step and supplies all the conditions for it, and so constantly furnishes all that is required for an endless progress in reality and worth. This is the process in which the spirit of man capitalizes and substantiates its activities, committing its gains to secure custody, amassing and using them for its self-enrichment--in which it depends on no other than itself and is sovereign master of its future and its fate. This is the way in which selves are made, or rather, make themselves.