in Thoreau’s Journal:

There are from time to time mornings, both in summer and winter, when especially the world seems to begin anew, beyond which memory need not go, for not behind them is yesterday and our past life; when, as in the morning of a hoar frost, there are visible the effects of a certain creative energy, the world has visibly been recreated in the night. Mornings of creation, I call them. In the midst of these marks of a creative energy recently active, while the sun is rising with more than usual splendor, I look back — I look back for the era of this creation, not into the night, but to a dawn for which no man ever rose early enough. A morning which carries us back beyond the Mosaic creation, where crystallizations are fresh and unmelted. It is the poet’s hour. Mornings when men are new-born, men who have the seeds of life in them. It should be a part of my religion to be abroad then.