If a certain norm of the canon law is trespassed, it can cause some harm which more or less concerns the order in the Church.
However, if one violates a fundamental truth of the faith, the consequence is a great danger to the salvation of the immortal souls, and this is inadmissible.
For this reason it is necessary to apply canonical punishments for heretical teaching as a warning. Today it is necessary above all because of the liberal heretics, who vegetate undisturbedly at the theological faculties.
Therefore, Your Holiness, do not be afraid to highlight the clear canonical sanctions against heretics and apostates!