Loquacity
"Much talking is the cause of danger. Silence is the means of avoiding misfortune. The talkative parrot is shut up in a cage. Other birds, without speech, fly freely about." - Saskya Pandita
"As it is the characteristic of great wits to say much in few words, so it is of small wits to talk much and say nothing." - François, Duc de La Rochefoucauld