Mesilat Yesharim – Chapter 17 – Part 2 & Chapter 18
Rabbi Guy Matalon
In chapter 17 of Mesilat Yesharim, the Ramchal discusses the trait of piety, explaining that a true pious person does not suffice with merely fulfilling the commandments, but seeks to please the Creator in all his ways. He emphasizes that piety is measured by pure inner intention, carefulness, and love of God.