What does Thoreau call his "intellect" and what is his purpose in doing so lines 99-110

Thoreau on his "intellect" and his purpose in doing so:

13th, 14th and 15th amendments to the United States of America constitution. During the restoration period, the amendments accepted in the States of America consisted of the 13th amendment, the 14th, and the 15th amendment.

These proposed changes were adopted following the civil war, and the goal was to finish in the nation with slavery and bondage.

Those now practicing and owning slaves would be treated as criminals and imprisoned. The only Americans who could exercise bondage were prisoners who could use prison inmates.

It says: ' neither slavery nor unintended servitude exists in the United States, except as the punishment for the criminal offense, for which the party has been properly convicted.