Sigourney's second conduct book, "Letters to My Pupils", was published in 1837. In this book, Sigourney focuses on pronunciation and conversation, and claims that women should train in enunciation even if they are not going to be speaking publicly. According to Sigourney, women's conversation should adhere to three rules: It should give pleasure; it should be instructive and it should be comforting. Sigourney also made a case for the value of silence at times, and argued that part of a woman's role is to be a good listener.