"The true spirit of conversation consists in building on another man’s observation, not overturning it."—Edward G. Bulwer-Lytton (1803–1873), British novelist/politician
What do you think of this quotation?
For me, I have found that more harm can come from tearing someone's opinion down, than from simply allowing that person to express their opinion. In other words, sometimes to be silent when I disagree is better than trying to change someone's opionion.
I also find that sometimes amazing ideas or answers to questions come from listening to another person's point of view. It changes my perspective and so a greater truth can come to light.
Some times being silent means much more than what a book does....