Where there is no vision, there is no hope.

Life is the art of drawing without an eraser.

Knowledge is power only if man knows what facts not to bother with.

Knowledge is the eye of desire and can become the pilot of the soul.

Having knowledge but lacking the power to express it clearly is no better than never having any ideas at all.

Even the knowledge of my own fallibility cannot keep me from making mistakes. Only when I fall do I get up again.

Knowledge is power. Information is liberating. Education is the premise of progress, in every society, in every family.

Knowledge is an unending adventure at the edge of uncertainty.

Our knowledge can only be finite, while our ignorance must necessarily be infinite.

Perplexity is the beginning of knowledge.