Peter Cartwright, the famous circuit rider and Lincoln's opponent for election to Congress, once stayed overnight with a skeptical physician who claimed that the only reality was what the senses discerned. The physician said to him, "Did you ever see religion?"
"Did you ever hear religion?"
"Did you ever smell religion?"
"Did you ever taste religion?"
"Did you ever feel religion?"
"Now, then," said the doctor, with apparent triumph, "I have proved, beyond a doubt, by four respectable witnesses, that religion is not seen, heard, smelled, or tasted; and but one lone, solitary witness, namely, feeling, has testified that it is an experimental fact. The weight of evidence is overpowering, sir, and you must give it up."
Cartwright then said to the doctor, "In pretending to relieve pain in the human system, you have been playing the hypocrite, and practicing a most wretched fraud on the gullibility of the people."
To the doctor's indignant protest Cartwright said, "Well, sir, did you ever see a pain?"
"Did you ever hear a pain?"
"Did you ever smell a pain?"
"Did you ever taste a pain?"
"Did you ever feel a pain?"
"Certainly I did, sir."
"Then," said Cartwright, "four respectable witnesses have testified that there is no such thing as pain in a human system."
Taking advantage of the doctor's discomfiture, Cartwright fell on his knees and commenced to pray. In a short time the great deeps of the man's heart were broken up; and, after a brief period of anxiety and spiritual agony, he found the Lord with a shout of triumph. His slaves he sent at his own expense to Liberia; and he himself became a preacher of the gospel, with many seals to his ministry.