Following the development of wu wei by Shen Buhai and then Mencius, Zhuangzhi and Laozi turn towards an unadorned "no effort". Laozi, as opposed to carved Confucian jade, advocates a return to the primordial Mother and to become like uncarved wood. He condemns doing and grasping, urging the reader to cognitively grasp oneness (still the mind), reduce desires and the size of the state, leaving human nature untouched. In practice, wu wei is aimed at thorough behaviour modification; cryptically referenced meditation and more purely physical breathing techniques as in the Guanzi (text), which includes just taking the right posture.