I'm not sure how aware of the rest of the world I am. I live a rather sheltered existence.
Julian ClaryThat defense alone is effectual, sure and durable which depends upon yourself and your own valour.
Niccolo MachiavelliBe sure of yourself, don't let anyone bully you, be a strong and independent woman or boy.
Nicole PolizziIf you put off everything till you're sure of it, you'll never get anything done.
Norman Vincent PealeThey would not find me changed from him they knew - only more sure of all I thought was true.
Robert FrostPhysics is like sex: sure, it may give some practical results, but that's not why we do it.
Richard Feynman