E4P27
Proposition — Part IV
Latin
Nihil certo scimus bonum aut malum esse nisi id quod ad intelligendum revera conducit vel quod impedire potest quominus intelligamus.
English (Elwes 1883)
We know nothing to be certainly good or evil, save such things as really conduce to understanding, or such as are able to hinder us from understanding.
Modern English
We know nothing with certainty to be good or bad except what truly conduces to understanding, or what can prevent us from understanding.