Associate yourself with men ...

Associate yourself with men of good quality, if you esteem your reputation. Be not apt to relate news, if you know not the truth thereof. Speak no evil of the absent, for it is unjust. Undertake not what you cannot perform, but be careful to keep your promise. There is but one straight course, and that is to seek truth, and pursue it steadily. Nothing but harmony, honesty, industry and frugality are necessary to make us a great and happy nation.
Associate yourself with men of good quality, if you esteem your reputation. Be not apt to relate news, if you know not the truth thereof. Speak no evil of the absent, for it is unjust. Undertake not what you cannot perform, but be careful to keep your promise. There is but one straight course, and that is to seek truth, and pursue it steadily. Nothing but harmony, honesty, industry and frugality are necessary to make us a great and happy nation.

Quotes from the same author

True friendship is a plant of slow growth, and must undergo and withstand the shocks of adversity, before it is entitled to the appellation.
Be courteous to all, but intimate with few, and let those few be well tried before you give them your confidence.
It is far better to be alone, than to be in bad company.
To be prepared for war is one of the most effective means of preserving peace.
Among many other weighty objections to the Measure, it has been suggested, that it has a tendency to introduce religious disputes into the Army, which above all things should be avoided, and in many instances would compel men to a mode of Worship which they do not profess.