HomeInvesting Mantra'sRules for Success in Investing. - Warren Buffett Investing Mantra's Rules for Success in Investing. - Warren Buffett Investment Guru Thursday, May 01, 2014 0 Investing Mantra - Warren Buffett.. The Rules for Success in Investing.. Rule No. 1 : Never lose money. Rule No. 2 : Never forget rule no. 1 ~ Warren Buffett Tags Investing Mantra's Newer Older