Jesse Romero's Blog · Catholic Teaching · Catechetics
RIGHT OR WRONG? WHEN WILL I KNOW?
By Jesse Romero · Published Feb 8, 2018 · Updated Feb 28, 2026
Age of ReasonConscienceRight and WrongThomas AquinasAristotleMoral DevelopmentIntellect and WillHuman Soul
QUESTION?
At what age is our conscience sufficiently developed to understand right and wrong?
ANSWER!
The child’s intellect and will are developed enough to function. Aristotle and Thomas Aquinas says that this occurs in the human soul around 7 years of age, this age is called 'the age of reason.'