Nietzsche wrote that “Anything that constraints man to love less than uncondionally has severed the roots of his strenght: he will wither away, that is to say become dishonest.”
“Anything” could be “History”, or our biography, our lives. What is loved less or more is existence. But the key here is the word “constraint”, for the statement retains all it’s relevance if were to reformulate it as: “Anything that constraints man to love more than condionally has severed the roots of his strenght: he will wither away, that is to say become dishonest.”.
Nietzsche continues by saying that history can only endure if it be transformed into art, but that in our age it would be called “false”.
Man, nor any other organism cursed with dicernment and judgment, loves unconditionally. That condition is mythological, as expressed in the story of Adam and Eve. I guess for Nietzsche too there was a fall. But isn’t this an accusation against the species of man as we find it that belies the highest concepts of Nietzsche’s philosophy? More honesty is found is describing man as loving but conditionally. The mendacity we see in the record of history came thru because man was constrained to abandon his judgment, his conditions, and was constrained for the sake of gaining Heaven, in the case of the Church (and for other falsehoods, such as Nationalism and Communism promised) to love his neighbor, to love his existence as it was unconditionally. He was forced to abandoned the right to complain and to bless existence as it was.
The key word in the end is constrained and not what man is in himself. Whenever man feels constrained his strenght is limited and in order to retain a semblance of it, man resorts to mendacity.