To Florus 3.111
In the preceding examples I emphasized a fully formed intention rather than the accomplishment of acts, because murder of a parent, sacrilege, adultery, and similar deeds are easier to avoid than to commit. An evil will does not always have the opportunity to carry out what it wants. Conversely, abstaining from these things involves complete quiet—unless you call the very unwillingness to toil a kind of toil. I pass over what holy Scripture, presented by prophets, evangelists, and apostles, and teachers shining with catholic soundness—John, Basil, Theodore, and others like them—have commended: committing crimes takes much greater effort than avoiding them.
Latin
Propterea autem in superioribus voluntatem perfectam magis quam rerum effectus locavi, quoniam et parricidium et sacrilegium et adulterium vel horum similia facilius est cavere quam facere; neque enim semper voluntati malae perpetrandi quod vult adest facultas, at e regione horum abstinentia in summa quiete consistit, nisi forte hoc ipsum a vobis labor dicatur, laborare nolle. Omitto ea, quae tam Scripturae sanctae, quas Prophetae, quas Evangelistae, quas Apostoli protulerunt, quam disputatores catholica sanitate fulgentes, Ioannes, Basilius, Theodorus et horum similes, commendaverunt, multo esse maiorem laborem committere crimina quam cavere.