qui sua sponte aliquid facit who does something voluntarily, 1.32.4, 1.138.4, 1.144.3, 3.33.1, 6.44.1, 8.68.1, [nonnulli codd. several manuscripts ἑκουσίως]
voluntarius voluntary, willing, 3.64.5, 7.8.3, 7.57.9,
sponte voluntarily, 8.27.3,