+The very thoroughness and fidelity with which we fulfill one duty, may hinder the fulfillment of another.+--We may become so absorbed in earning a living, and carrying on our business, and getting an education, that we shall give no time or attention to this communion with Nature. The fact that business, education, and kindred external and definite pursuits are directly under the control of our wills, while this power to appreciate Nature is a slow and gradual growth, only indirectly under our control, tempts us to give all our time and strength to these immediate, practical ends, and to neglect that closer walk with Nature which is essential to a true appreciation of her loveliness. Someone asks us "What is the use of spending your time with the birds among the trees, or on the hill-top under the stars?" and we cannot give him an answer in dollars and cents. And so we are tempted to take his simple standard of utility in ministering to physical wants as the standard of all worth. We neglect Nature, and she hides her face from our preoccupied eyes. In this busy, restless age we need to keep ever in mind Wordsworth's warning against this fatal temptation: The world is too much with us; late and soon, Getting and spending, we lay waste our powers: Little we see in Nature that is ours; We have given our hearts away, a sordid boon! THE VICE OF DEFECT. This obtuseness does not come upon us suddenly. All children keenly appreciate the changing moods of Nature. It is from neglect to open our hearts to Nature, that obtuseness comes. It steals over us imperceptibly. We can correct it only by giving ourselves more closely and constantly to Nature, and trusting her to win back to herself our benumbed and alienated hearts. THE VICE OF EXCESS.