Children enter school as question marks and leave as periods.

Once you have learned to ask questions - relevant and appropriate and substantial questions - you have learned how to learn and no one can keep you from learning whatever you want or need to know.

Television is a non graded curriculum and excludes no viewer for any reason, at any time. In other words, in doing away wtih the idea of sequenece and continuity in education, television undermines the idea that sequence and continuity have anything to do with thought itself.

A definition is the start of an argument, not the end of one.

Everything we know has its origins in questions. Questions, we might say, are the principal intellectual instruments available to human beings.

The problem in the 19th century with information was that we lived in a culture of information scarcity, and so humanity addressed that problem beginning with photography and telegraphy and the - in the 1840s. We tried to solve the problem of overcoming the limitations of space, time, and form.

Americans no longer talk to each other, they entertain each other. They do not exchange ideas, they exchange images. They do not argue with propositions; they argue with good looks, celebrities and comercials.