There is a significant Latin proverb; to wit: Who will guard the guards?
Be vigilant; guard your mind against negative thoughts.
— Buddha
They that are on their guard and appear ready to receive their adversaries, are in much less danger of being attacked than the supine, secure and negligent.
Eternal vigilance is the price of liberty.
There is nothing so much seduces reason from vigilance as the thought of passing life with an amiable woman in marriage.
He is most free from danger, who, even when safe, is on his guard.
There are no permanent changes because change itself is permanent. It behooves the industrialist to research and the investor to be vigilant.