The philosophical Daoists claim that they understand Tao well enough and do not need to study the four Confucian books. They may have a point there or perhaps not.
While ardent followers of Zhuangzi do not need to know about Confucian virtues; Daoists who follow the philosophy of Laozi cultivate those cardinal virtues as depicted in the Tao Te Ching, with the hopes of returning to Tao.
To those familiar with Tao and the Zhouyi, the cultivation of virtues is in line with Heaven and Earth. To be in line with or follow Heaven and Earth is to understand Tao.
Previously one had mentioned that Laozi and Confucius both knew what would happen if there is Tao or no Tao on Earth. Today one would add in another ancient sage.
‘When right government prevails in the kingdom, princes of little virtue are submissive to those of great, and those of little worth to those of great.
When bad government prevails in the kingdom, princes of small power are submissive to those of the great, and the weak to the strong.
Both of these cases are the rule of Heaven. They who accord with Heaven are preserved, and they who rebel against Heaven perish.’
[Works of Mencius 4 .7 Legge]
[Note: Legge has chosen to translate the Chinese words – having Tao under Heaven – as right government prevails in the kingdom. And – no Tao under Heaven – as bad government prevails in the kingdom.]
Like the two great ancient sages before him, Mencius also knew well his Yi and cardinal virtues. Therefore he also knew much about Heaven and Earth.
Since the advent of the absence of Tao all under Heaven on September 15, 2008 as indicated by the Yi, quite a number of people have perished. The funny thing since then is that even divinities have withheld healing people on Earth, let alone sing.
That is a little bit more on Tao and the Yi.