Soon after this melancholy event, Friend Hopper went to Maryland, to visit two sisters who resided there. He was accompanied in this journey by his wife's brother, David Tatum. At an inn where they stopped for refreshment, the following characteristic incident occurred: A colored girl brought in a pitcher of water. "Art thou a slave?" said Friend Hopper. When she answered in the affirmative, he started up and exclaimed, "It is against my principles to be waited upon by a slave." His more timid brother-in-law inquired, in a low tone of voice, whether he were aware that the mistress was within hearing. "To be sure I am," answered Isaac aloud. "What would be the use of saying it, if she were _not_ within hearing?" He then emptied the pitcher of water, and went out to the well to re-fill it for himself. Seeing the landlady stare at these proceedings, he explained to her that he thought it wrong to avail himself of unpaid labor. In reply, she complained of the ingratitude of slaves, and the hard condition of their masters. "It is very inconvenient to live so near a free state," said she. "I had sixteen slaves; but ten of them have run away, and I expect the rest will soon go." "I hope they will," said Isaac. "I am sure I would run away, if I were a slave." At first, she was disposed to be offended; but he reasoned the matter with her, in a quiet and friendly manner, and they parted on very civil terms. David Tatum often used to tell this anecdote, after they returned home; and he generally added, "I never again will travel in a Southern state with brother Isaac; for I am sure it would be at the risk of my life."