The resistant virtues of the structure that we make depend on their form; it is through their form that they are stable and not because of an awkward accumulation of materials. There is nothing more noble and elegant from an intellectual viewpoint than this; resistance through form.
Dieste's unique and innovative method of design, a melding of architecture and engineering, elevated these often humble buildings to masterworks of art.
There are deep moral/practical reasons for our search which give form to our work: with the form we create we can adjust to the laws of matter with all reverence, forming a dialogue with reality and its mysteries in essential communion... For architecture to be truly constructed, the materials must be used with profound respect for their essence and possibilities; only thus can 'cosmic economy' be achieved... in agreement with the profound order of the world; only then can have that authority that so astounds us in the great works of the past.
Publish a list of books they would be willing to discuss with other people to the open web. Antilibraries – collections of books you haven't read yet but would like to read – are particularly well suited to this proposition.
See which books people in their social network want to discuss, and/or subscribe to other people's lists
Be notified when 4+ people in their network have the same book on their discussion list – possibly via an email thread?
Coordinate and schedule a time to read and discuss the book with that group.