The great obstacle to discovering the shape of the earth, the continents, and the oceans was not ignorance, but the illusion of knowledge.

The greatest obstacle to discovery is not ignorance - it is the illusion of knowledge.

Some are born great, some achieve greatness, and some hire public relations officers.

The traveler was active; he went strenuously in search of people, of adventure, of experience. The tourist is passive; he expects interesting things to happen to him. He goes 'sight-seeing.'

Human models are more vivid and more persuasive than explicit moral commands.

The courage to imagine the otherwise is our greatest resource, adding color and suspense to all our life.

Freedom means the opportunity to be what we never thought we would be.

I write to discover what I think.

Knowledge is not simply another commodity. On the contrary. Knowledge is never used up. It increases by diffusion and grows by dispersion.

Technology is so much fun but we can drown in our technology. The fog of information can drive out knowledge.

We suffer primarily not from our vices or our weaknesses, but from our illusions. We are haunted, not by reality, but by those images we have put in their place.

Guard your heart against anger.

Why shouldn't a mystical theology be possible? 'I want to touch God or become God, ' I declared in my journal. All through that year I abandoned myself intermittently to these deliriums.

He was essentially a truth-speaking man, if only he know how to speak the truth.

Eve wasn't a size 6 and neither am I.

As long as art is the beauty parlor of civilization, neither art nor civilization is secure.

It's not about being digital. It's about students who are born digital.

I called my cat William because no shorter name fits the dignity of his character. Poor old man, he has fits now, so I call him Fitz-William.

There are too many other barriers to success in life to allow a lack of self-confidence to be one of them.

Maybe I'm an open book, or maybe love is like a magnifying glass straight into the souls of those who own your heart.

As an athlete, I was never really comfortable with being a celebrity.