Just as diverse water streams flowing through a number of terrains (forests, hills, plains, countrysides, towns, etc.) can nurture so many budding and mature plants on earth, so can diverse and inspiring positive thought streams flow through so many hearts on earth, nurturing peace, love, and happiness from heart to heart!
The thought streams springing from the book help build a lovely ambiance for stable, cool, focused, and stronger actions through the practice of remaining in a meditative way, destroying non-value-added disturbances and negative stimuli.