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
I have pacified your mind Bodhidharma, the first Patriarch of Ch'an in China, was asked by Hui K'e, the future Second Patriarch, so pacify his mind for him; Bodhidharma said, "Bring me your mind and I will pacify it for you." Hui K'e said, "When I search for my mind, I cannot find it." Bodhidharma said, "I have pacified your mind for you." At this Hui K'e was enlightened. Yuanwu Keqin, Thomas Cleary & J.C. Cleary, The Blue Cliff Record In a state of reverberation