A Biblical apostle of this name was invited to touch the marks of nails in Jesus's hands after the Resurrection.
One saint of this first name, who allegedly resurrected a Welshman eight years after his own death, was a bishop of Hereford surnamed de Cantilupe. Around 1400, a sainted monk of this given name wrote Imitation of Christ. A thinker of this name used the phrases "On the contrary" and "I answer that" to reply to lists of objections to Catholicism, and used the phrase "The Philosopher" to refer to Aristotle. A Biblical apostle of this name was invited to touch the marks of nails in Jesus's hands after the Resurrection. For 10 points, give this first name common to the sainted author of Summa Theologica and a "doubting" apostle.
One saint of this first name, who allegedly resurrected a Welshman eight years after his own death, was a bishop of Hereford surnamed de Cantilupe.
Saint Thomas [accept Thomas de Cantilupe, or Saint Thomas Aquinas, or Doubting Thomas; or Tomaso d'Aquino]