Intentionally using the quotes of others without author attribution is plagiarism and contributes to illiteracy.

In an expanding universe one must move forward to avoid falling back.

I'm glad that people who say "The world is coming to an end." won't be around to say "I told you so!" if it does.

The irony of the pot calling the kettle black. Where's the pun in that?

Smile. You might be happier than you think.

It's easier to leap if you're already dancing.

You're just as witty as you feel, just as witty as you feel inside.

Babies are nature's way of ensuring that men and women will always have something in common.

A cunning linguist always gets his licks in.

The song of the rose is heard with the nose.