J.c. Cooper said this quote

Next to the dragon, and connected with it, water is the most frequently used symbol in Taosim. It is the strength in apparent weakness, the fluidity of life, an also symbolic of the state of coolness of judgment, acceptance and passionlessness, as opposed to the heat of argument, the friction of opposition, and the emotion of desire. Water fertilizes, refreshes and purifies and it is symbolic of gentle persuasion in government of the state and the individual. It occupies the lowest position, yet is the most powerful of forces. The highest goodness in like water.