It is a sin directly against one's neighbour, since one man cannot over-abound in external riches, without another man lacking them.

Whatever is received is received according to the nature of the recipient.

It is not theft, properly speaking, to take secretly and use another's property in a case of extreme need: because that which he takes for the support of his life becomes his own property by reason of that need

Better to illuminate than merely to shine.

Not everything that is more difficult is more meritorious.

Clearly the person who accepts the Church as an infallible guide will believe whatever the Church teaches.

The celestial bodies are the cause of all that takes place in the sublunar world.