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. "Thoughts are forces-like builds like and like attracts like. Thoughts of strength both build strength from within and attract it from without. Thoughts of weakness actualize weakness from within and attract it from without. Courage begets strength, fear begets weakness. And so courage begets success, fear begets failure. "