Sometimes we speak clumsily and create internal knots in others. Then we say, "I was just telling the truth." It may be the truth, but if our way of speaking causes unnecessary suffering, it is not Right Speech. The truth must be presented in ways that others can accept.
"The Heart of the Buddha's Teaching," by Thich Nhat Hanh
A Tree Grows in Brooklyn, by Betty Smith, library discussion book
A Wrinkle in Time, by Madeleine L'Engle, library discussion book