Th. Ribot, The Psychology of the Emotions (1897)
“ In passing from the emotional to the intellectual phase, sympathy gains in extent and stability. In fact, emotional sympathy requires some analogy in temperament or nature; it can scarcely be established between the timid and the daring, between the cheerful and the melancholic; it may be extended to all human beings and to the animals nearest us, but not beyond them. On the contrary, it is the special attribute of intelligence to seek resemblances or analogies everywhere, to unify; it embraces the whole of nature. ”
