 The Letters on Education is a rather loosely structured work that contains, as well as letters on the appropriate form of education, discussion of vegetarianism, and our duties to animals, a significant portion of the Treatise on the Immutability of Moral Truth, which takes up all of the third part of the later work. In the Letters Macaulay sets out her rather sensible prescriptions for raising robust children, who are neither rendered too timid nor too bold, and she argues that given the differences in individual character, educators may have to take different approaches depending on the temperament of the child. She suggests that, although she has dreamed of schemes of public education, she has come to the conclusion that the government of her time could not be trusted to provide appropriate care, and so she advises a private education in which boys and girls are educated together and taught exactly the same curriculum, with some concessions to sexual difference in the choice of exercise and sports.