Authors:

Those who know how close the connection is between the state of mind of a man-his courage and hope, or lack of them-and the state of immunity of his body will understand that the sudden loss of hope and courage can have a deadly effect. The ultimate cause of my friend's death was that the expected liberation did not come and he was severely disappointed.

Viktor E. Frankl (2015). “Man's Search For Meaning, Gift Edition”, p.62, Beacon Press
Those who know how close the connection is between the state of mind of a man-his courage and hope, or lack of them-and the state of immunity of his body will understand that the sudden loss of hope and courage can have