Much hard labor is often expended that is not called for and that will never be appreciated. If those who have large concentrativeness cultivate this faculty to the neglect of others, they cannot have well-proportioned minds. They are like machinery in which only one set of wheels works at a time. While some wheels are rusting from inaction, others are wearing from constant use. Men who cultivate one or two faculties, and do not exercise all equally, cannot accomplish one half the good in the world that God designed they should. They are one-sided men; only half of the power that God has given them is put to use, while the other half is rusting with inaction. (3T 35.1) MC VC

If this class of minds have a special work, requiring thought, they should not exercise all their powers upon that one thing, to the exclusion of every other interest. While they make the subject before them their principal business, other branches of the work should have a portion of their time. This would be much better for themselves and for the cause generally. One branch of the work should not have exclusive attention to the neglect of all others. In their writings some need to be constantly guarded, that they do not make points blind that are plain, by covering them up with many arguments which will not be of lively interest to the reader. If they linger tediously upon points, giving every particular which suggests itself to the mind, their labor is nearly lost. The interest of the reader will not be deep enough to pursue the subject to its close. The most essential points of truth may be made indistinct by giving attention to every minute point. Much ground is covered; but the work upon which so much labor is expended is not calculated to do the greatest amount of good, by awakening a general interest. (3T 35.2) MC VC