Thinking Quotes - Page 697
Thinking is one of the most important weapons in dealing with problems
Nelson Mandela (2011). “Nelson Mandela By Himself: The Authorised Book of Quotations”, p.300, Pan Macmillan
Nathaniel Branden (1998). “Nathaniel Brandens Self-Esteem Every Day: Reflections on Self-Esteem and Spirituality”, p.117, Simon and Schuster