The scope of thoughts you can write is much broader than the scope of thoughts you can think on your own. Written language, much like computer code, can express programs that are out of reach for brains alone. Write to think. twitter 
This is a message originally sent by Ward Cunningham to the Patterns List in January 1994. I can't find it archived online anywhere. Steve Berczuk sent me an OCR'ed version he had, which I just cut and pasted in. -- Doug Lea