เWhen we, who possess such virtues, find ourselves in any place where our children, relatives, and extended family are present, we must use graceful and melodious speech. When we speak, our words should be attractive, engaging, and conducive to harmony among one another, without causing any discord. Such speech is considered polite, courteous, and full of decorum. It should be the kind of speech that people are eager to hear and want to listen to repeatedly. This is known as “pleasant speech.” Graceful words are extremely important among humans and must be used appropriately.
Source: “The Legacy of Dhamma,” Volume 1, Pages 216-217 (Khandha 6: Socially Useful Acts, September 20, 1953)