The image of revolution is fire on the lake -- the fire evaporates the water, the water puts out the fire. Change causes conflict; conflict brings about change. This reading refers to that time in the cycle of human affairs when things need stirring up, and when change is in the air.
Revolutions must proceed according to certain fixed laws in order to succeed. They must begin at the right moment, gather support from a broad-base of people, be guided by sincere and capable leaders and -- most important of all -- must address a real need. The strength of the forces of change will always be in direct proportion to the urgency of the need being championed. This is true whether the revolution is in government, in business, in education or in one's personal affairs.