In friendship, as well as in love, the mind is often the dupe of the heart.
The only solid and lasting peace between a man and his wife is, doubtless, a separation.
A man who cannot command his temper, his attention, and his countenance should not think of being a man of business.
You must look into people, as well as at them.
Little secrets are commonly told again, but great ones generally kept.
The only sure way of avoiding these evils [vanity and boasting] is never to speak of yourself at all. But when, historically, youare obliged to mention yourself, take care not to drop one single word that can directly or indirectly be construed as fishing for applause.