[kodyo]

Economic ideas that embrace human freedom and human flourishing are likely to consider truth a virtue.

You won't find it in Marx, Keynes, etc.

[denton-scratch]

Defining "truth" and "virtue" is like nailing jelly to a wall; nobody agrees on what they are. That's why economists like Marx and Keynes didn't try to measure them. Essentially nobody that aspires to any kind of rigour appeals to truth and virtue.