Ralph Waldo Trine (1866-1958) was an American author who wrote: The Greatest Thing Ever Known (1898), What All the World"s A-Seeking (1899), In Tune with the Infinite; or, Fullness of Peace, Power, and Plenty (1899), In the Fire of the Heart (1906), This Mystical Life of Ours (1907), Thoughts I Met on the Highway (1912), Along the Sunlit Road (1915), The Higher Powers of Mind and Spirit (1917) and Every Living Creature. "How can I make life yield its fullest and best? How can I know the true secret of power? How can I attain to a true and lasting greatness? How can I fill the whole of life with a happiness, a peace, a joy, a satisfaction that is ever rich and abiding, that ever increases, never diminishes, that imparts to it a sparkle that never loses its lustre, that ever fascinates, never wearies? "