What is more natural in a democratic age than that we should begin to measure the stature of a work of art-especially of a painting-by how widely and how well it is reproduced?

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.

Death is a state of mind---many people on Earth spend their entire lives dead.

Computers and mobile devices are becoming known for their inherent insecurities and the ability to damage the long term health of the users.

Faith and doubt cannot exist in the same mind at the same time, for one will dispel the other.

I know that positive energy begets positive energy. I know that when I decide to see the good in something or someone, it's returned to me tenfold.

A friend is one who says, I've time, when others have to rush.

One can never take the cynicism one comes across in life too seriously.

I care more about getting this right [NHS reform] than I do about getting it done.

Yours is only what you always have on you.

O'er her warm cheek, and rising bosom, move The bloom of young Desire and purple light of love.

The love of gain never made a painter; but it has marred many.