" Henry David Thoreau, for example, doesn’t directly mention Stoicism or any of the great Stoics in Walden, his masterpiece, but to those who know what to look for, the Stoic influence is present. In his Journal, Thoreau is more forthcoming. He writes, for example, that “Zeno the Stoic stood in precisely the same relation to the world that I do now. "

― William B. Irvine , A Guide to the Good Life: The Ancient Art of Stoic Joy