Sun Tzu puts forward seven criteria to compare rival sides, including virtuous rulers, capable generals and disciplined troops, to judge victory or defeat. He also notes leaving or staying based on whether a general adopts his strategies.
Mencius went to see King Hui of Liang, who stood by a pond, gazing at the swans, geese, elks and deer, and said, “Do virtuous men also take delight in such scenes?”