in Thoreau’s Journal:

That man is the richest whose pleasures are the cheapest.

in Thoreau’s Journal:

I am not aware of growth in any plant yet, unless it be the further peeping out of willow catkins. They have crept out further from under their scales, and, looking closely into them, I detect a little redness along the twigs even now. You are always surprised by the sight of the first spring bird or insect; they seem premature, and there is no such evidence of spring as themselves, so that they literally fetch the year about. It is thus when I hear the first robin or bluebird or, looking along the brooks, see the first water-bugs out circling. But you think. They have come, and Nature cannot recede.

in Thoreau’s Journal:

In the spaces of still, open water I see the reflection of the hills and woods, which for so long I have not seen, and it gives expression to the face of nature. The face of nature is lit up by these reflections in still water in the spring. Sometimes you see only the top of distant hill reflected far within the meadow, where a dull, gray field of ice intervenes between the water and the shore.

in Thoreau’s Journal:

There is something of spring in every season.

in Thoreau’s Journal:

We were walking along the sunny hillside on the south of Fair Haven Pond (on the 4th), which the choppers had just laid bare, when, in a sheltered and warmer place, we heard a rustling amid the dry leaves on the hillside and saw a striped squirrel eying us from its resting-place on the bare ground. It sat still till we were within a rod, then suddenly dived into its hole, which was at its feet, and disappeared. The first pleasant days of spring come out like a squirrel and go in again. 

in Thoreau’s Journal:

The snow is softening. Methinks the lichens are a little greener for it. A thaw comes, and then the birches, which were gray on their white ground before, appear prettily clothed in green. I see various kinds of insects out on the snow now. On the rock this side the Leaning Hemlocks, is the track of an otter. 

in Thoreau’s Journal:

I  must not forget the lichen-painted boles of the beeches….The habit of looking at things microscopically, as the lichens on the trees and rocks, really prevents my seeing aught else in a walk.

in Thoreau’s Journal:

Up river on ice to Fairhaven Pond…The air is fresher & the sky clearer in the morning –– We have this morning the clear cold continent sky of January. The river is frozen solidly & I do not have to look out for openings. Now I can take that walk along the river highway & the meadow––which leads me under––the boughs of the maples & the swamp white oaks &c which in summer overhang the water––there I can now stand at my ease & study their phenomena––amid the sweet gale & button bushes projecting above the snow & ice.  I see the shore from the water side––  A liberal walk––so level & wide & smooth without under brush. 

in Thoreau’s Journal

I go along below the north end of the Cliffs. The rocks in the usual place are buttressed with icy columns, for water in almost imperceptible quantity is trickling down the rocks. It is interesting to see how the dry black or ash-colored umbilicaria, which get a little moisture when the snow melts and trickles down along a seam or shallow channel of the rock, become relaxed and turn olive-green and enjoy their spring, while a few inches on each side of this gutter or depression in the face of the rock they are dry and crisp as ever. Perhaps the greater part of this puny rill is drunk up by the herbage on its brink.

in Thoreau’s Journal:

What produces the peculiar softness of the air yesterday & today—as if it were the air of the south suddenly pillowed amid our wintry hills— We have suddenly a different sky—a different atmosphere.

It is as if the subtlest possible soft vapour were diffused through the atmosphere. Warm Air has come to us from the S. But charged with moisture—which will yet distill in rain or congeal into snow & hail—

in Thoreau’s Journal:

Here is our first spring morning according to the almanac. It is remarkable that the spring of the almanac and of nature should correspond so closely. The morning of the 26th was good winter, but there came a plentiful rain in the afternoon, and yesterday and to-day are quite spring like. This morning the air is still, and, though clear enough, a yellowish light is widely diffused throughout the east now just after sunrise. The sunlight looks and feels warm, and a fine vapor fills the lower atmosphere. I hear the phcebe or spring note of the chickadee, and the scream of the jay is perfectly repeated by the echo from a neighboring wood. For some days past the surface of the earth, covered with water, or with ice where the snow is washed off, has shone in the sun as it does only at the approach of spring, methinks. And are not the frosts in the morning more like the early frosts in the fall, ––common white frosts ?