I have read lots of passage involving letter writers, I don't know what is it. In China, No writer writer through letter. who can indroduce something about this?for example:
The critic Edmund Wilson was not a self-conscious letter writer or one who tried to sustain studied mannerisms. Nor did he resort to artifice or entangle himself in circumlocutions. The young, middle-aged, and old Wilson speaks directly through his letters, which are informal for the most part and which undisguisedly reflect his changing moods. On occasion-in response, perhaps, to the misery of a friend or a public outrage or a personal challenge-he can become eloquent, even passionate, but that is not his prevailing tone.