"As the mathematician Terence Tao has written,
math study has three stages:
the 'pre-rigorous,' in which basic rules are learned,
the theoretical 'rigorous' stage, and, last and most intriguing,
'the post-rigorous,' in which intuition suddenly starts to play a part."
Rigor in a Log24 post of Sunday evening, May 25, 2008: "Hall of Mirrors."
Some further material related to tesseracts and time, in three stages
(roughly corresponding to Tao's, but not in chronological order):
See also a recent Log24 post on remarks from Four Quartets .
(The vertices of a tesseract form, in various natural ways, four quartets.)