Standards are different for all things, so the standard set by man is by no means the only 'certain' standard. If you mistake what is relative for something certain, you have strayed far from the ultimate truth.

Heaven does without doing through its purity, Earth does without doing through its calmness.

Life comes from the earth and life returns to the earth.

We cling to our own point of view, as though everything depended on it. Yet our opinions have no permanence; like autumn and winter, they gradually pass away.

You cannot speak of ocean to a well-frog, the creature of a narrower sphere. You cannot speak of ice to a summer insect, the creature of a season.

The sound of water says what I think.

Luck implies an absolute absence of any principle.