Input (grade 12): While still in Great Britain, he met Abbé Sicard, head of the Institution Nationale des Sourds-Muets à Paris, and two of its deaf faculty members, Laurent Clerc and Jean Massieu.
Output (grade 8): While in Great Britain, he met Abbé Sicard, head of a school for deaf people in Paris, and two of its deaf teachers, Laurent Clerc and Jean Massieu.