The turmoil of the world we cannot avoid, but the disturbances of mind we can overcome. The duties and difficulties of life claim our attention, but we can rise above all anxiety concerning them. Surrounded by noise, we can yet have a quiet mind; involved in responsibilities, the heart can be at rest; in the midst of strife, we can know the abiding peace. The twenty pieces which comprise this book, unrelated as some of them are in the letter, will be found to be harmonious in the spirit, in that they point the reader towards those heights of self-knowledge and self-conquest which, rising above the turbulence of the world, lift their peaks where the Heavenly Silence reigns. (Summary from the book)