He saw also that he must work out his dreams within the circle of his own limitations; and that his limitations were not the limitations of his fellow workers; neither were their limitations his. He did not know yet just where the outmost circle of his limitations lay but he knew that it was there and that he must make no mistake when he came to it. And this, too, is true: just to the degree that the man recognized his limitations, the circle widened. Also the man came to understand that there are things knowable and things unknowable. He came to see that truest wisdom is in this: for one to spend well his strength on the knowable things and refuse to dissipate his intellectual vigor upon the unknowable. Not until he began really to know things was he conscious in any saving degree of the unknowable. He saw that those who strive always with the unknowable beat the air in vain and exhaust themselves in their senseless folly. He saw that to concern oneself wholly with the unknowable is to rob the world of the things in which are its life. To meditate much upon the unknowable is an intellectual dissipation that produces spiritual intoxication and often results in spiritual delirium tremens. A habitual spiritual drunkard is a nuisance in the world. The wisdom of Ignorance is in nothing more apparent than in a clear recognition of the unknowable. And then the man came to regret knowing some of the things that he knew. He came, in some things, to wish with all his heart that he had Ignorance where he had Knowledge. He found that much of the time and strength that he desired to spend in acquiring the knowledge that would help him to work out his dreams, he must spend, instead, in ridding himself of knowledge that he had already acquired. He learned that to forget is quite as necessary as to remember and very often much more difficult. Young he was, and strong he was, but, already, he felt the dragging power of the things he would have been better for not knowing--the things he desired to forget. They were very little things in comparison to the things that in the future he would wish to forget; but to him, at this time, they did not seem small. So it was that, in his effort to acquire Knowledge, the man began to strive also for Ignorance.