What examples show the central theme of this chapter "walden was dean and is alive again

The overriding theme of this chapter is rebirth. "Walden was dead and is alive again," Thoreau writes. Here, spring ­ the time during which the book began ­ has come once more, and the cycle of another year has been completed. Thoreau's coalescing of two years' experience into one, which he notes once more at the end of the chapter, emphasizes this unending cycle. The rebirth of the pond symbolizes the rebirth of Thoreau's spirit. With the emergence of spring, he too is reborn ­ and his exultation in describing nature illustrates his positive perspective.