William James, The Principles of Psychology, Volume 2…
“ In mere tender emotion not sexual, there is nothing but the sense of touch to gratify, unless we assume the occult magnetic influences.... In a word, our love pleasures begin and end in sensual contact. Touch is both the alpha and omega of affection. As the terminal and satisfying sensation, the ne plus ultra, it must be a pleasure of the highest degree.... Why should a more lively feeling grow up towards a fellow-being than towards a perennial fountain? ”
