Dietrich Bonhoeffer was a powerful man. He inherited his tall stature from his mother’s side, the Hases and the large-limped Kalckreuths, and his supple strength from the Bonhoeffers. His movements were short and brisk. He didn’t like leisurely walks. A successful jumper and a sprinter in his schooldays, he still competed with his students when he was a university lecturer. He was impatient with illnesses and tried to shorten their duration through the copious use of medicines. During periods of stress he did not hesitate to take pills in order to sleep.

~ Eberhard Bethge, Dietrich Bonhoeffer: A Biography (Revised Edition); Portrait (1970), xvii.