I think every writer should have tattooed backwards on his forehead, like ambulance on ambulances, the words 'everybody needs an editor.

The greatest challenge facing mankind is the challenge of distinguishing reality from fantasy, truth from propaganda. Perceiving the truth has always been a challenge to mankind, but in the information age (or as I think of it, the disinformation age) it takes on a special urgency and importance.

To apply general tools to specific problems is to fail.

Cut off from direct experience, cut off from our own feelings and sometimes our own sensations, we are only too ready to adopt a viewpoint or perspective that is handed to us, and is not our own.

Often I feel I go to some distant region of the world to be reminded of who I really am. There is no mystery about why this should be so. Stripped of your ordinary surroundings, your friends, your daily routines, your refrigerator full of your food, your closet full of your clothes -- with all this taken away, you are forced into direct experience. Such direct experience inevitably makes you aware of who it is that is having the experience. That's not always comfortable, but it is always invigorating.

One may even suspect that there is more to reality than measurements will ever reveal.

The purpose of history is to explain the present - to say why the world around us is the way it is. History tells us what is important in our world, and how it came to be. It tells us what is to be ignored, or discarded. That is true power - profound power. The power to define a whole society.