If--as Virchow and many others hold--cells have some individuality and some intelligence, will they not respond to our Happiness, at least as much as you and I respond to the Happiness of our Nation and Empire when there is good news and success of the whole of which we form a particle? To enjoy an Environment, or the memory of it, is a pleasant Avenue. If, instead of rushing through our sweet holidays and hours of peace and pleasantness, we “pause on every charm,” and concentrate our attention on the Pleasantness, we can make the Environment, on which so many people depend for their Health and Happiness, our own possession, within our minds, by means of picture-memories, or sound-memories, or even word-memories. Here is one, from J. Beattie:-- “_But who the melodies of morn can tell? The wild brook babbling down the mountain-side; The lowing herd, the sheepfold’s simple bell; The pipe of early shepherd dim descried In the low valley; echoing far and wide The clamorous horn along the cliffs above; The hollow murmur of the ocean-tide; The hum of bees, the linnet’s lay of love, And the full choir that wakes the universal grove._” After all, what is our real Environment? Most people would say, at once--the air, the building, the scenery, in which, and the people and paraphernalia among which, we happen to be at any time. And these are indeed part of our Environment. But our true Environment is, first of all, the contents of our mind, and especially that part of the contents--whether memories or imaginations--to which we give most attention and interest; secondly, the Divine influence in which, whether we recognise it or not, we “live and move and have our being.” And, chiefly, we live in whatever we think of or allow ourselves not to refuse as residents in our mind. I have said little, in these few pages, about what are ordinarily regarded as Environmental helps. I rather wished to emphasise the importance of keeping happy, and of using such means as we had always or often with us. I could have written much about colours, music, books, friendship, and so on. But I had to leave unwritten far more than I have written here. If these ideas help the reader to keep happy more consistently, less spasmodically, and more independently of outside conditions, they will have served their purpose. Perhaps even the mere titles of some books may be of use towards this end--“All’s Right with the World,” “Just Be Glad,” and “Keep Happy.” To keep happy means enjoyment and ease, peace and poise, health and fitness, during work-times and non-work times; it means more work and better work; it means better opportunities and openings for our activities in the future; it means better rest and sleep after work; it means constant, all-round improvement for oneself and others. It is, like Health, part of our duty towards God, our neighbour, and our self, and the myriads of cell-lives working within us.