What do these proverbs mean?

Jack of all trades, master of none.

(This is a person who can do almost anything but not to perfection.)

Judge not lest ye be judged.

(If you judge other people or form negative opinions about the behavior of others, be prepared to have your own behavior criticized.)

Justice delayed is justice denied.

(Delaying justice or the punishment of someone who has done something wrong is almost as bad as not providing a just settlement or punishment.)

Keep your chin up.

(Try to remain confident about your situation; don’t feel so bad about the way things are going.)

Keep your powder dry.

(Try to keep something of value in reserve in case it is needed; be prepared.)

Knowledge is power.

(The more knowledge or education you have, the better your position will be in life.)

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