Pliny the Younger (A.D. 62?c.A.D. 113). Letters. The Harvard Classics. 190914.
CXII. Trajan to Pliny
THOUGH by my edicts I have ordained that no largesses shall be given out of the public money, yet, that numberless private persons may not be disturbed in the secure possession of their fortunes, those donations which have been made long since ought not to be called in question or revoked. We will not, therefore, enquire into anything that has been transacted in this affair so long ago as twenty years; for I would be no less attentive to secure the repose of every private man than to preserve the treasure of every public community.