“A cloud masses, the sky darkens, leaves twist upward, and we know that it will rain. We also know that after the storm, the runoff will feed into groundwater miles away, and the sky will grow clear by tomorrow. All of these events are distant in time and space, if they're all connected within the same pattern. Each has an influence on the rest, and influence that is usually hidden from view. You can only understand the system of rainstorm by contemplating the whole not any part of the pattern.
Businesses and other human endeavors are also systems. They, too, are bound by invisible fabrics of interrelated actions, which often take years to fully play out their effects on each other. Since we are part of that lacework ourselves, it's doubly hard to see the whole pattern of change. Instead we tend to focus on snapshots of isolated parts of the system, and wonder why our deepest problems never seem to get resolved.”

Source: The Fifth Discipline (1990), p. 7 as cited in: Vivien Martin (2003) Leading Change in Health and Social Care. p. 37