He also took part in debates at Greeneville College.[19]

Johnson's slaves
In 1843, Johnson purchased his first slave, Dolly, who was 14 years old at the time. Dolly had three children—Liz, Florence and William. Soon after his purchase of Dolly, he purchased Dolly's half-brother Sam. Sam Johnson and his wife Margaret had nine children. Sam became a commissioner of the Freedmen's Bureau and was known for being a proud man who negotiated the nature of his work with the Johnson family. Notably, he received some monetary compensation for his labors and negotiated with Andrew Johnson to receive a tract of land which Andrew Johnson gave him for free in 1867.[20]
In 1857, Andrew Johnson purchased Henry, who was 13 at the time and would later accompany the Johnson family to the White House. Ultimately, Johnson owned at least ten slaves.[20]
Andrew Johnson freed his slaves on August 8, 1863; they remained with him as paid servants. A year later, Johnson, as military governor of Tennessee, proclaimed the freedom of Tennessee's slaves. Sam and Margaret, Johnson's former slaves, lived in his tailor shop while he was president, without rent.