Truth without God?

There are few ways of life that are non-theistic (not the same as atheistic). Logically, it is impossible to have absolute moral standards when we do not have a superior being. Buddhism is a primary example. According to Buddhism, each person has the ability to become Buddha (enlightened). This is claimed to be possible without the help of any superior being. Unfortunately (rather fortunately), we cannot do away a superior being when we accept the reality of morality (right and wrong, good and bad). Unless, we have an absolute truth given to us by a superior being, we cannot have a truly absolute moral standard. Here is the reason - if everyone finds enlightenment on his own, we could (and would) have contradictory moral standards. We might find murder unacceptable, but Hilter might find it a virtue. Stalin's enlightenment and Gandhi's enlightenment do not agree. So, who is truly enlightened? Who decides? We need a superior being to set the standard. Otherwise, there is no standard. If there is no standard, we can never know what is truth.
Someone told me that "Man is lost, looking for something and he doesn't even know what he is looking for". We need God to show us what we are looking for (life). We need God to set the standard (truth) and we need God to show us the way. Jesus said He is the way, the truth and the life.