Don't recall using that expression but I expect you're right.
It's all about subjective versus objective reality.
In subjective reality what you believe is supposed to be your particular truth and thus according to some,as valid as any other truth.
" perception is reality" if you like.
This is the prevailing philosophy since it was honed to a fine art by the dreadful Bertrand Russel.
Objective reality calls for "Ontic trust" , although perhaps let's not go there right now. Suffice it to say that it rejects the idea that there are alternative truths - there may be alternative versions , but only one is actually true and all the rest are either lies or mistakes.
Now,in the same way that man is not in himself capable of good or evil, but rather chooses which of these forces to lean towards, he isn't capable of discerning the truth for himself using only his own mind or logic - again he instead has to choose between two alternative and opposing versions , and must use his other abilities to do this. The abilities I speak of are his spiritual aspect, and of course ,in the event that man rejects or disbelieves that he even has such a component, it cannot help him.
One side will tell you that there is no such thing as absolute truth and the other will tell you that there is. As in most areas of human existence ,you must choose which to believe and you have free will to do that.