nuova enciclopedia popolare ovvero dizionario generale di scienze, lettere, arti, storia, geografia, ecc. ecc. - volume 12 (T-ZVINGLIO) + indice generale djvu
“ Just as there is no loss of basic energy in the universe, so no thought or action is without its effects, present or ultimate, seen or unseen, felt or unfelt. ” ― Norman Cousins