Beautiful Quotes - Page 308
Robert Grudin (1997). “Time and the Art of Living”, p.183, Houghton Mifflin Harcourt
Richard P. Feynman (2015). “The Quotable Feynman”, p.129, Princeton University Press
Richard Louv (2013). “Last Child in the Woods: Saving our Children from Nature-Deficit Disorder”, p.82, Atlantic Books Ltd