There is only one good, knowledge, and one evil, ignorance.

Logic will get you from A to Z, imagination will get you everywhere.

Be kind, everyone you meet is fighting a hard battle.

Intelligence is the ability to adapt to change.

Life would be tragic if it weren't funny.

Folks are usually about as happy as they make their minds up to be.

Life is a beautiful magnificent thing, even to a jellyfish.

He can who thinks he can, and he can't who thinks he can't. This is an inexorable, indisputable law.

Early success is a terrible teacher. You’re essentially being rewarded for a lack of preparation, so when you find yourself in a situation where you must prepare, you can’t do it. You don’t know how.