Question 39 — Schism

We must now consider the vices contrary to peace, which belong to deeds: such are schism, strife, sedition, and war. In the first place, then, about schism, there are four points of inquiry:

(1) Whether schism is a special sin?

• (2) Whether it is graver than unbelief?
• (3) Of the power exercised by schismatics;
• (4) Of the punishment inflicted on them.