Four years later he was recalled to Paris, appointed professor of theology at the Sorbonne, made a canon of the Sainte-Chapelle, and given the Abbey of Plainpied (Diocese of Bourges).
In return they published pamphlets and multiplied attacks to discredit him and his teaching, especially after the publication of the Constitution Unigenitus, in which Pope Clement XI condemned (1713) their errors as manifested in the 'Reflections morales of Quesnel.
Tournély was actively engaged in furthering the acceptance of this Constitution by the assembly of the French clergy, of which he was a consultor, and by the faculty of theology of which he was an influential member.
When, after the death of Louis XIV (1715) and after the connivance of Cardinal Noailles, the Jansenists became masters of the faculty of theology, they expunged from its registers the Bull "Unigenitus" and expelled from its meetings Tournély and a score of his friends among the doctors (January 1716).
With the common title "Præ Theologicæ", he issued in Latin the following treatises in octavo: The work passed through several editions, among others those of Paris (16 vols., in 8 vo, 1731–46), Cologne (10 vols., in fol., 1752–65).