Frankle was a Jews psychologist imprisoned by Nazis along with his entire family during World war-2. He has narrated his entire life experiences in his book "Man's search for meaning". His life in the camp is the pinnacle of sufferings which no other human beings would have gone through in their life on earth. All his love ones were killed in the gas chamber in front of his eyes and he was tortured by the soldiers beyond any one's imagination.
He had two choices - one to kill himself by abusing the soldier as no one can kill themselves on their own or stay calm and find a "Purpose" in this hostile environment. Obviously he chose the later.
He extended an affectionate service as a psychologist comforting all his fellow human beings and remained sane till the end of the Hitlers regime while people became mad. After release form the camp Victor Frankle founded a new therapy for depression named as "Logo Therapy". Logo means "Purpose". Those who are bored or depressed are the ones who have not yet found purpose in their life.
One of the greatest sayings of Victor Frankle is:
"They can take away everything from me except my freedom to choose the response to any external stimuli & situation". His definition of "Freedom" revolutionized the later generations who truly understood what he is saying. Our peace & Happiness is not the function of any external objects and events, but by the choices we make in any situations. Don't get succumbed by the events and gain victory over them by making right choices.
With whole of my heart