Free Thought beliefs are not formed on the basis of authority, tradition, revelation, or dogma, and instead by logic, reason, and empirical observation.
Proverbs 4:6-9 Get wisdom, get understanding; do not forget my words or turn from them. 6 Do not forsake wisdom, and she will preserve you; love her, and she will guard you. 7 Wisdom is supreme; so acquire wisdom. And whatever you may acquire, gain understanding. 8 Prize her, and she will exalt you; if you embrace her, she will honor you. 9 She will set a garland of grace on your head; she will present you with a crown of beauty.”
2 Corinthians 10:5 We tear down arguments, and every presumption set up against the knowledge of God; and we take captive every thought to make it obedient to Christ.