Fulfilling the four needs [spiritual, mental, physical, social] in an integrated way is like combining elements in chemistry. When we reach a "critical mass" of integration, we experience spontaneous combustion--an explosion of inner synergy that ignites the fire within and gives vision, passion, and a spirit of adventure to life.
Stephen Covey (1932 -)
Source: First Things First: To Live, to Love, to Learn, to Leave a Legacy, Pages: 48
Contributed by: ~C4Chaos