Others may fence themselves with walls and houses, when they do such deeds as these, and wrap themselves in darkness—aye, they have many a device to hide themselves. Another may shut his door and station one before his chamber to say, if any comes, He has gone forth! he is not at leisure! But the true Cynic will have none of these things; instead of them, he must wrap himself in Modesty: else he will but bring himself to shame, naked and under the open sky. That is his house; that is his door; that is the slave that guards his chamber; that is his darkness!

Golden Sayings of Epictetus