Wise men lay up knowledge - They keep secret every thing that has a tendency to disturb domestic or public peace; but the foolish man blabs all out, and produces much mischief. Think much, speak little, and always think before you speak. This will promote your own peace and that of your neighbor.
Lay up - The point of the maxim is that the wise man reserves what he has to say for the right time, place, and persons (compare Matthew 7:6), as contrasted with the foolish, ever giving immediate utterance to what destroys himself and others.