Giving Quotes - Page 629
Karl Popper (2005). “The Logic of Scientific Discovery”, p.244, Routledge
"On Freedom (All Life is Problem Solving)". Essay by Karl Popper, translated by Patrick Camiller, 1994.
"Hoyt's New Cyclopedia Of Practical Quotations" by Jehiel Keeler Hoyt, p. 321-25, Satires, X, line 349, 1922.
Julia Cameron (2001). “The Writer's Life: Insights from The Right to Write”, p.13, Penguin