The difference between architecture and building is that the former expresses an idea, while the latter is merely a structure built on economical principles. The value of matter depends solely on its capacities of expressing ideas.
What we have forgotten is that thoughts and words are conventions, and that it is fatal to take conventions too seriously. A convention is a social convenience, as, for example, money ... but it is absurd to take money too seriously, to confuse it with real wealth ... In somewhat the same way, thoughts, ideas and words are "coins" for real things.
But it will depend on young people like you being open to new ideas and new possibilities. And it will require young people like you never to stereotype or assume the worst about other people.
[ William Ayers] is an example of what I'm talking about. This is a guy who lives in my neighborhood, who's a professor of English in Chicago who I know and who I have not received some official endorsement from. He's not somebody who I exchange ideas from on a regular basis.
I do not rush into constructive work. When I get an idea, I start right away to build it up in my mind. I change the structure, I make improvements, I experiment, I run the device in my mind. It is absolutely the same to me whether I operate my turbine in thought or test it actually in my shop. It makes no difference, the results are the same. In this way, you see, I can rapidly develop and perfect an invention, without touching anything.
For we have never actually understood the revolutionary sense beneath them – the incredible truth that what religion calls the vision of God is found in giving up any belief in the idea of God.
That is the trouble with many inventors; they lack patience. They lack the willingness to work a thing out slowly and clearly and sharply in their mind, so that they can actually "feel it work." They want to try their first idea right off; and the result is they use up lots of money and lots of good material, only to find eventually that they are working in the wrong direction. We all make mistakes, and it is better to make them before we begin.