I guess that in the meantime, before you become self realised, you are going on faith in what someone said, and hope that it is the truth.
Some do, yes. Others have had an experience that offers a glimpse of the truth.
Is it from philosophy or from what God said?
Said? What God?
If people claim to have reached that goal I guess it must be a wonderful experience but I wonder if it is really absolute truth or just something beyond what they have experienced.
That is indeed quite the pickle, no doubt.