On insight.............

Intellectual knowledge exists in and of the brain.
Because the brain is part of the body, which must one
     day expire, this collection of facts, however large
     and impressive, will expire as well.

Insight, however, is a function of the spirit.
Because your spirit follows you through cycle after
     cycle of life, death, and rebirth, you have the
     opportunity of cultivating insight in an ongoing
     fashion.
Refined over time, insight becomes pure, constant,
     and unwavering.

This is the beginning of immortality.

-Verse 35
Hua Hu Ching, The Unkown Teachings of Lao Tzu
Brian Walker