Designer, implementor, user, writer A Fragment by Donald Knuth dl.acm.org Thus, I came to the conclusion that the designer of a new system must not only be the implementor and the first large-scale user; the designer should also write the first user manual. The separation of any of these four components would have hurt TeX significantly. If I had not participated fully in all these activities, literally hundreds of improvements would never have been made, because I would never have thought of them or perceived why they were important. Eating your own dog food making
The inner nature of material The work of an artist in getting the details that he wants is greatly facilitated if he selects a material whose inner nature makes it want to take the desired shape. Cyril Stanley Smith, A Search for Structure A state of energetic repose materialdetails