Question

for all his sagacity, for all his caution and astuteness, the old judge had gone the way of the rest. source: and then there were none in the sentence above, sagacity has the same or almost the same meaning as: discernment responsibility experience nonpartisanship

Explanation:

"Sagacity" means having good judgment and discernment. "Discernment" also refers to the ability to judge well. "Responsibility" is about being accountable. "Experience" is about past events. "Nonpartisanship" is about not taking sides. So "sagacity" is closest in meaning to "discernment".

Answer:

discernment