At the Day of Judgment, we shall not be asked what we have read, but what we have done; not how well we have spoken, but how holy we have lived.

[Certe adveniente die judicii, non quæretur a nobis quid legimus, sed quid fecimus; nec quam bene diximus, sed quam religiose viximus.]

Thomas à Kempis (c. 1380-1471) German-Dutch priest, author

The Imitation of Christ, Book 1, ch. 3 (c. 1418)

Alt trans.: "At the Day of Judgement, we shall not be asked what we have read, but what we have done; not how eloquently we have spoken, but how holily we have lived."