in Thoreau’s Journal:

We are provided with singing birds and with ears to hear them. What an institution that! 

in Thoreau’s Journal:

In whatever moment we awake to life, as now I this evening, after walking along the bank and hearing the same evening sounds that we heard of yore, it seems to have slumbered just below the surface, as in the spring the new verdure which covers the fields has never retreated far from the winter.

in Thoreau’s Journal:

Viola ovata on bank above Lee’s Cliff. Edith Emerson found them there yesterday;

also columbines and the early potentilla April 13th ! !

in Thoreau’s Journal:

Saw the first blossoms (bright-yellow stamens or pistils) on the willow catkins to-day. The speckled alders and the maples are earlier then. The yellow blossom appears first on one side of the ament and is the most of bright and sunny color the spring has shown, the most decidedly flower-like that I have seen.

It flowers, then, I should say, without regard to the skunk-cabbage, q. v. First the speckled alder, then the maple without keys, then this earliest, perhaps swamp, willow with its bright-yellow blossoms on one side of the ament. It is fit that this almost earliest spring flower should be yellow, the color of the sun..

in Thoreau’s Journal:

A pure brook is a very beautiful object to study minutely.  It will bear the closest inspection, even to the fine air-bubbles, like minute globules of quicksilver, that lie on its bottom. The minute particles or spangles of golden mica in these sands, when the sun shines on them, remind one of the golden sands we read of. Everything is washed clean and bright, and the water is the best glass through which to see it….

in Thoreau’s Journal:

As for the saxifrage, when I had given it up for to-day, having, after a long search in the warmest clefts and recesses, found only three or four buds which showed some white, I at length, on a still warmer shelf, found one flower partly expanded, and its common peduncle had shot up an inch. These few earliest flowers in these situations have the same sort of interest with the arctic flora, for they are remote and unobserved and often surrounded with snow, and most have not begun to think of flowers yet.

in Thoreau’s Journal:  

I am surprised to find Walden completely open. When did it open? According to all accounts, it must have been between the 6th and 9th. Fair Haven must have opened entirely the 5th or 6th, and Walden very nearly at the same time. This proves how steadily it has been melting, notwithstanding the severe cold of the last half of March; i. e., it is less affected by transient heat or cold than most ponds.

The flowers have blossomed very suddenly this year as soon as the long cold spell was over, and almost all together.

in Thoreau’s Journal:

As to which are the earliest flowers, it depends on the character of the season, and ground bare or not, meadows wet or dry, etc., etc., also on the variety of soils and localities within your reach.

in Thoreau’s Journal:

If you make the least correct observation of nature this year, you will have occasion to repeat it with illustrations the next, and the season and life itself is prolonged.

in Thoreau’s Journal:

The aspect of April waters, smooth and commonly high, before many flowers (none yet) or any leafing while the landscape is still russet, and frogs are just awakening, is peculiar.

in Thoreau’s Journal:

Begin to look off the hills & see the landscape again through a slight haze, with warm wind on the cheek.

in Thoreau’s Journal:

The atmosphere of morning gives a healthy hue to our prospects.

in Thoreau’s Journal:

When the sun shines unobstructedly, the landscape is full of light, for it is reflected from the withered fawn coloured grass—as it cannot be from the green grass of summer.

in Thoreau’s Journal:

It is evident that it depends on the character of the season whether this flower or that is the most forward; whether there is more or less snow or cold or rain, etc…..

It will take you half a lifetime to find the earliest flower.

in Thoreau’s Journal:

With this flower, so much more flowerlike or noticeable than any yet—begins a new era in the flower season. 

in Thoreau’s Journal:

It is incredible what a revolution in our feelings and in the aspect of nature this warmer air alone has produced. Yesterday the earth was simple to barrenness, and dead, bound out. Out of doors there was nothing but the wind and the withered grass, and the cold though sparkling blue water, and you were driven in upon yourself. Now, you would think there was a sudden awakening in the very crust of the earth, as if flowers were expanding and leaves putting forth; but not so. I listen in vain to hear a frog or a new bird as yet. Only the frozen ground is melting a little deeper, and the water is trickling from the hills in some places. No, the change is mainly in us. We feel as if we had obtained a new lease of life.

in Thoreau’s Journal:

The spring advances in spite of snow and ice and cold even.

in Thoreau’s Journal:

This which is a chilling wind to my fellow is decidedly refreshing to me…I feel an impulse also already to jump into the half melted pond.

in Thoreau’s Journal:

We know too well what shall have for our Saturday’s dinner—but each days feast in Nature’s year is a surprise to us & adapted to our appetite & spirits—

She has arranged such an order of feasts as never tires––Her motive is not economy but satisfaction.

in Thoreau’s Journal:

The eye must be firmly anchored to this earth which beholds birches and pines waving in the breeze in a certain light—a serene rippling light.