Sour grapes

 Mind, do remember
 the times that
 totally focussed,
 sharp as a knife
 you dissected reality,
 exactingly

 the times that
 absorbent as a sponge
 you imbued knowledge
 insatiably

 do remember,
 stretching the limits
 of creative
 comprehension
 to the breaking point,
 exuberantly.

 Sedate  wisdom
 becomes sufficient
 to the old,
 with large doses
 of dream time.
 

 ******************
 This is off on a tangent from a poem of the greek poet Cavafy,
 called "remember body",