He faithfully attended church with great devotion, and served as an altar boy and was part of the parish choir.
He was very distressed if he could not go to church because he had to work.
His father wanted him to enter the family business and become a rope maker at any cost.
One day the boy pointed thoughtfully to the river flowing beneath their house and said in a very serious tone, “Life flows like water… Our days quickly pass away… And then what?”
Grimoaldo already understood that his brief earthly life was a preparation for eternal life.
At the age of 16, overcoming many difficulties with tenacious resolve, he entered the Passionist novitiate at Paliano (Frosinone) where on 5 March 1899 he was vested with the religious Habit and on 6 March of the following year, he consecrated himself to the Lord with his Profession of Vows.
In the monastery, Grimoaldo proceeded along the path to holiness that he had initially undertaken as a child in his family and in his parish.