The tongue has no bones, but is strong enough to break a heart. So be careful with your words.
Be careful with your words. Once they're said, they can only be forgiven, not forgotten.
He who does not understand your silence will probably not understand your words.
The tongue like a sharp knife... Kills without drawing blood.
Words are tools which automatically carve concepts out of experience.
[Writer: Julian Sorrell Huxley]