What is Benigne Faciendae Sunt Interpretationes, Propter Simplicitatem Laicorum, Ut Res Magis Valeat Quam?

Legal Definition
Constructions [of written instruments] are to be made liberally, on account of the simplicity of the laity, [or common people,] in order that the thing [or subject-matter] may rather have effect than perish, [or became void.] Co.. Litt. 36a; Broom, Max. 540.
-- Black's Law Dictionary