The student is to read history actively and not passively; to esteem his own life the text, and books the commentary.
It was a commentary of Al Farabi on the metaphysics of Aristotle.
One recreation he had: the writing of a Commentary on the Epistle to the Romans.
This is Luther's great doctrine in his 'Commentary' on the Galatians.
The whole Peninsular war forms a commentary on this text, with Waterloo for a crowning lesson.
Go over the ground again with a commentary and perhaps a translation.
The whole story of Constantinople might be told in commentary on the great walls that once protected her from the foe.
Without waiting for a commentary, I leaped on my Arab and darted down the hill.
Such is the turn which things have taken lately, that when Gen. Adams writes a book, I am expected to write a commentary on it.
I quote some of the notes on x in the commentary and apparatus.
commentary 1531, from L. commentarius "notebook, annotation," from commentum (see comment). Originally in Eng. as an adj.