Be sober, be vigilant. [ St. Peter ]

A careless watch invites the vigilant foe. [ Proverb ]

Twine round thee threads of steel, like thread on thread,
That grow to fetters, or bind down thy arms
With chains concealed in chaplets. Oh, not yet
Mayst thou embrace thy corselet, nor lay by
Thy sword; not yet, O Freedom, close thy lids
In slumber; for thine enemy never sleeps.
And thou must watch and combat till the day
Of the new earth and heaven. [ Bryant ]

Pride looks back upon its past deeds, and calculating with nicety what it has done, it commits itself to rest; whereas humility looks to that which is before, and discovering how much ground remains to be trodden, it is active and vigilant. Having gained one height, pride looks down with complacency on that which is beneath it; humility looks up to a higher and yet higher elevation. The one keeps us on this earth, which is congenial to its nature; the other directs our eye, and tends to lift us up to heaven. [ James McCosh ]