It is not given to man to know what is right and what is wrong.
 Leo Tolstoy, War and Peace (1869). copy citation

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Author Leo Tolstoy
Source War and Peace
Topic wrong right
Date 1869
Language English
Reference
Note Translated by Louise and Aylmer Maude
Weblink http://www.gutenberg.org/files/2600/2600-h/2600-h.htm

Context

““One thing I thank God for is that I did not kill that man,” said Pierre. “Why so?” asked Prince Andrew. “To kill a vicious dog is a very good thing really.” “No, to kill a man is bad—wrong.” “Why is it wrong?” urged Prince Andrew. “It is not given to man to know what is right and what is wrong. Men always did and always will err, and in nothing more than in what they consider right and wrong.” “What does harm to another is wrong,” said Pierre, feeling with pleasure that for the first time since his arrival Prince Andrew was roused, had begun to talk, and wanted to express what had brought him to his present state.” source