We can make the trains run on time but if they are not going where we want them to go, why bother?

'The scientific method,' Thomas Henry Huxley once wrote, 'is nothing but the normal working of the human mind.' That is to say, when the mind is working; that is to say further, when it is engaged in correcting its mistakes.

People like ourselves may see nothing wondrous in writing, but our anthropologists know how strange and magical it appears to a purely oral people - a conversation with no one and yet with everyone. What could be stranger than the silence one encounters when addressing a question to a text? What could be more metaphysically puzzling than addressing an unseen audience, as every writer of books must do? And correcting oneself because one knows that an unknown reader will disapprove or misunderstand?

We do not measure a culture by its output of undisguised trivialities but by what it claims as significant.

By itself photography cannot deal with the unseen, the remote, the internal, the abstract, it does not speak of Man, only of a man ; not of Tree, only a tree.

There is no way to help a learner to be disciplined, active, and thoroughly engaged unless he perceives a problem to be a problem or whatever is to-be-learned as worth learning, and unless he plays an active role in determining the process of solution.

Embedded in every technology there is a powerful idea, sometimes two or three powerful ideas. Like language itself, a technology predisposes us to favor and value certain perspectives and accomplishments and to subordinate others. Every technology has a philosophy, which is given expression in how the technology makes people use their minds, in how it codifies the world, in which of our senses it amplifies, in which of our emotional and intellectual tendencies it disregards.