II. Good Acts and Evil Acts

From The Catechism of the Catholic Church

1755
A morally good act requires the goodness of the object, of the end, and of the
circumstances together. An evil end corrupts the action, even if the object is
good in itself (such as praying and fasting “in order to be seen by
men”).
The object of the choice can by itself vitiate an act in its entirety. There
are some concrete acts – such as fornication – that it is always wrong to
choose, because choosing them entails a disorder of the will, that is, a moral
evil.

PART THREE: LIFE IN CHRIST

SECTION ONE MAN’S VOCATION LIFE IN THE SPIRIT
- CHAPTER ONE THE DIGNITY OF THE HUMAN PERSON
  - Article 4 THE MORALITY OF HUMAN ACTS
    - II. Good Acts and Evil Acts

From The Catechism of the Catholic Church – rosary.team