Decayed literature makes the richest of all soils.

March 16. 

Before sunrise. 

With what infinite and unwearied expectation and proclamation the cocks usher in every dawn, as if there had never been one before! And the dogs bark still, and the thallus of lichens springs, so tenacious of life is nature. 

Spent the day in Cambridge Library. 

Walden is not yet melted round the edge. 

It is, perhaps, more suddenly warm this spring than usual. 

Mr. Bull thinks that the pine grosbeaks, which have been unusually numerous the past winter, have killed many branches of his elms by budding them, and that they will die and the wind bring them down, as heretofore. 

Saw a large flock of geese go over Cambridge and heard the robins in the College Yard. 

The Library a wilderness of books. 

Looking over books on Canada written within the last three hundred years, could see how one had been built upon another, each author consulting and referring to his predecessors. You could read most of them without changing your leg on the steps.

It is necessary to find out exactly what books to read on a given subject. Though there may be a thousand books written upon it, it is only important to read three or four; they will contain all that is essential, and a few pages will show which they are. Books which are books are all that you want, and there are but half a dozen in any thousand. 

I saw that while we are clearing the forest in our westward progress, we are accumulating a forest of books in our rear, as wild and unexplored as any of nature's primitive wildernesses. 

The volumes of the Fifteenth, Sixteenth, and Seventeenth Centuries, which lie so near on the shelf, are rarely opened, are effectually forgotten and not implied by our literature and newspapers. 

When I looked into Purchas's Pilgrims, it affected me like looking into an impassable swamp, ten feet deep with sphagnum, where the monarchs of the forest, covered with mosses and stretched along the ground, were making haste to become peat. Those old books suggested a  certain fertility, an Ohio soil, as if they were making a humus for new literatures to spring in. I heard the bellowing of bullfrogs and the hum of mosquitoes reverberating through the thick embossed covers when I had closed the book. 

Decayed literature makes the richest of all soils.

H. D. Thoreau, Journal, March 16, 1852



Walden is not yet melted round the edge.  See March 14, 1852 ("The ice on Walden has now for some days looked white like snow, the surface being softened by the sun.");  Journal, March 18, 1852("The pond is still very little melted around the shore.");  April 1, 1852 ("Walden is all white ice, but little melted about the shores."); April 14. 1852 (" Walden is only melted two or three rods from the north shore yet."); April 19, 1852 (" Walden is clear of ice. The ice left it yesterday, then, the 18th. ");Walden. ("In 1845 Walden was first completely open on the 1st of April; in '46, the 25th of March; in '47, the 8th of April;  in '51, the 28th of March; in '52, the 18th of April; in '53, the 23rd of March;  in '54, about the 7th of April.")