Some Christian thinkers knew arguments must rest on reason yet assumed Muslim premises

Evidence

The tradition of Trinitarian argument is well exemplified in Yahya ibn ‘Adi, who wrote in Arabic in the tenth century, and who in many ways seems to be an oriental Ramon Lull, anxious to prove the Trinity by natural reasons alone; he at least avoided the contrary mistake of citing Scripture to Muslims who consider the canonical text corrupt. — Norman Daniel, Islam and the West, 52 (#exemplifies, via linked claim)

Categorization

• XREF: connects to: Medieval Christian-Muslim disputation mostly argued from premises neither side shared; Religious disagreement could supposedly be settled through necessary rational proofs rather than authority.; Medieval polemicists hoped rational argument could unify the faiths (+4 more)

Broader Connections

• Christian apologists argued with Muslims within Islamic terms rather than citing Scripture #exemplifies (0.92) — Norman Daniel, Islam and the West, 52
• Religious disagreement could supposedly be settled through necessary rational proofs rather than authority. #expands (0.80)
• Medieval Christian-Muslim disputation mostly argued from premises neither side shared #qualifies (0.78)
• Medieval polemicists hoped rational argument could unify the faiths #expands (0.75)
• Medieval Christian polemicists knew Islamic Christology but falsely assumed Muslims accepted the Old Testament #expands (0.72) — John V. Tolan, Saracens, 1034