Philosophy for Dummies by Tom Morris...

knowledge= poperly justified true belief.

• luck never made a man wise. ( Seneca)
• do not believe hastily. (Ovid)
• the mind is a strange machine which can combine the materials offered it in the most astonishing ways.( Bertrand Russell)
• be led by reason. (solon)
• doubt is the vestibule which all must pass, before they can enter into the temple of truth.( charles Caleb Colton)
• doubt is the beginning not the end, of wisdom (george IIes)
• the skeptic does not mean him who doubts, but him who investigates or researches, as opposed to him who assert and thinks he has found. ( Miguel de Unamumo)
• believe that life is worth living, and your belief will help create the fact. ( Willia James)
• the great end of life is n ot knowledge but action. (T.H. Huxley)
• it is not enough to have a good mind. the main thing is to use it well.(Descartes)
• to be good is noble, but to show others how to be good is nobler and no trouble.
• goodness is easier to recognize than to define. (W.H. Auden)