"Reality is merely an illusion, albeit a very persistent one." - Albert Einstein
I am NOT a fan of the whole "perception is reality" bit. One who suffers from schizophrenia sees things that are not there and hears voices that otherwise do not exist. They feel those things are real but "feelings" are not facts and "facts" are verifiable reality.
“Perception is the lie that we convince ourselves exists” ― Melissa Bradley
“ The question is not what you look at, but what you see. ” ― Henry David Thoreau
So, if what each person "perceives" can be considered "reality", then what defines truth? ...That which can be proven by evidence? Scripture has quite a bit to say regarding the matter:
12 Of a truth, God will not do wickedly,
and the Almighty will not pervert justice. (Job 34:12. ESV.)
9 For there is no truth in their mouth;
their inmost self is destruction;
their throat is an open grave;
they flatter with their tongue. (Psalm 5:9. ESV.)
Psalm 52:2: Your tongue plots destruction,
like a sharp razor, you worker of deceit.
Psalm 12:2: Everyone utters lies to his neighbor;
with flattering lips and a double heart they speak.
Whoever speaks the truth gives honest evidence, but a false witness utters deceit. (Proverbs 12:17. ESV.)
Truthful lips endure forever, but a lying tongue is but for a moment. (Proverbs 12:19. ESV.)
Which one of you convicts me of sin? If I tell the truth, why do you not believe me? (John 8:46. ESV.)
6 [Love] does not rejoice at wrongdoing, but rejoices with the truth. (1 Corinthians 13:6. ESV.)
Today's JESUS CALLING by Sarah Young devotional message says,
"Do not expect to be treated fairly in this life. People will say and do harmful things to you, things you don't deserve....Don't be concerned about setting the record straight. Instead of obsessing about other people's opinions of you, keep your focus on Me." (2004. Nashville, TN. Pg.315.)
Lead me in your truth and teach me, for you are the God of my salvation; for you I wait all the day long. (Psalm 25:5. ESV.)