Action is more generally understood than words.

It is in your hands, to make a better world for all who live in it.

Think before you speak, your words could hurt someone's feeling more than you intended it to.

The greatest tie of all is language.... Words are the only things that last for ever. The most tremendous monuments or prodigies of engineering crumble under the hand of Time. The Pyramids moulder, the bridges rust, the canals fill up, grass covers the railway track; but words spoken two or three thousand years ago remain with us now, not as mere relics of the past, but with all their pristine vital force.

By swallowing evil words unsaid, no one has ever harmed his stomach.

The words you'll most regret Are the ones that are left unsaid.