(See “Oft thought, but e’er so well expressed?”, p. 194, Trefethen.)
Here is a list of Trefethen’s index cards I refer to in my tiddlies.
Conscious/unconscious (http://trefethen.net/2014/05/10/conscious-unconscious/) <-> Aligning reason and feeling
A watched to-do list never boils (p. 118) <-> Webs and threads
The diameter of intellectual space (p. 135)
Randomness in art (p. 141) <-> Life as remix. “Our powers of interpretation are enormous, while our facility to create out of a vacuum is relatively weak.”
Where babies come from, (p. 214) <-> Education
Here are some index cards I particularly like (which I haven’t referenced):