Be ashamed to catch yourself idle.

I wake up every morning at nine and grab for the morning paper. Then I look at the obituary page. If my name is not on it, I get up.

He'll cheat without scruple, who can without fear.

Chess teaches foresight, by having to plan ahead; vigilance, by having to keep watch over the whole chess board; caution, by having to restrain ourselves from making hasty moves; and finally, we learn from chess the greatest maxim in life - that even when everything seems to be going badly for us we should not lose heart, but always hoping for a change for the better, steadfastly continue searching for the solutions to our problems.

Make use of your friends by being of use to them.

Grievances cannot be redressed until they are known; and they cannot be known but through complaints and petitions. If these are deemed affronts, and the messengers punished as offenders, who will henceforth send petitions? And who will deliver them? Wise governments encouraged the airing of grievances, even those that were lightly founded Foolish governments did the opposite - to their peril. Where complaining is a crime, hope becomes despair.

Success has ruin'd many a man.