No man should go through life without once experiencing healthy, even bored solitude in the wilderness, finding himself depending solely on himself and thereby learning his true and hidden strength.
Source: In 2,715 One-Line Quotations for Speakers, Writers & Raconteurs, by Edward F. Murphy, 1981.
-- Jack Kerouac, (Mar 12 1922-1969), US novelist, poet; He gave the Beat movement its name and celebrated its code of poverty and freedom in a series of novels, e.g., On the Road.