It is a sin to regard the fact that God cannot do the impossible as a limitation on his powers.
Thomas AquinasJustice is a certain rectitude of mind whereby a man does what he ought to do in the circumstances confronting him.
Thomas AquinasDo not wish to jump immediately from the streams to the sea, because one has to go through easier things to the more difficult.
Thomas AquinasMan can sin against nature in two ways. First, when he sins against his specific rational nature, acting contrary to reason. In this sense, we can say that every sin is a sin against man's nature, because it is against man's right reason.
Thomas Aquinas