These (nebulous) assertions seem unlikely on many levels. Psychopaths have few morals but continue to exist. I have no idea what "inner balance" even is.
He may be asserting that morals are necessary for the existence of humanity as a whole, in which case I'd point to many animals with few morals who continue to exist just fine.
I know of no animals other than humans who have nuclear weapons and the capacity to completely wipe themselves out on a whim.
Another month has passed and here is a new rationality quotes thread. The usual rules are: