If what one has to say is not better than silence, then one should keep silent.
When you're in jail, a good friend will be trying to bail you out. A best friend will be in the cell next to you saying, 'Damn, that was fun'.
No one is afraid of heights, they're afraid of falling down. No one is afraid of saying I love you, they're afraid of the answer...
Say what you have to say, not what you ought. Any truth is better than make-believe.