We only have to lay down everything, day and night, no matter whether we walk, stand, sit or recline, in the midst of either stillness or disturbance, and whether busy or not; throughout our bodies, within and without, there should be only a doubt, a uniform, harmonizing and continuous doubt, unmixed with any other thought, in other words, a hua t’ou which is likened to a long sword leaning against the sky, which we will use to cut down a demon or Buddha should either appear. Thus we will not fear false thinking; who then will disturb us; who will distinguish between disturbance and stillness and who will cling to existence and non-existence? If there be fear of false thinking, this fear will increase false thinking. If there be awareness of purity, this purity will immediately be impure. If there be fear of falling into non-existence, there will immediately be a fall into existence. If there be desire to attain Buddhahood, there will immediately be a fall into the way of demons. [For this reason] it is said: ‘The carrying of water and fetching of firewood are nothing but the wonderful Truth. The hoeing of fields and the cultivation of soil are entirely ch’an potentialities.’ This does not mean that only the crossing of legs for sitting in meditation can be regarded as Ch’an training in the performance of one’s religious duty.
虛雲性徹 Xuyun Xingche (Empty Cloud), “LAYING DOWN THINKING AND GIVING RISE TO A SINGLE THOUGHT”, The Chan Training