As I write, many of you are enjoying your summer vacations, face to face with nature. The health of the mountains or the sea is in your blood; your bodies know the joy of active movement; your minds are filled with the interest of new scenes and adventures, of sports and fun with friends. But every once in a while I think it likely that your happiness is increased by something beautiful you have seen in nature. Perhaps even now, as you read these words, there comes to you the memory of some sunset, or moonlight on the water, of early morning mist creeping among the tree tops, or I know not what of nature’s beauty, suddenly revealed to you because you were in the mood to receive it.