Who said “Man's biological weakness is the condition of human culture.”?

“It is a talent of the weak to persuade themselves that they suffer for something when they suffer from something; that they are showing the way when they are running away; that they see the light when they feel the heat; that they are chosen when they are shunned.”

“Weaklings must lie.”

“All cruelty springs from weakness.”

“Our strength grows out of our weakness.”

“She lacks the indefinable charm of weakness.”

“Only the person who has faith in himself is able to be faithful to others.”

“The successful revolutionary is a statesman, the unsuccessful one a criminal.”

“Love is the only sane and satisfactory answer to the problem of human existence.”

“Man is the only animal for whom his own existence is a problem which he has to solve.”

“To die is poignantly bitter, but the idea of having to die without having lived is unbearable.”

“Immature love says: ''I love you because I need you.'' Mature love says: ''I need you because I love you.''”