The Mexican billionaire Carlos Slim hasn't signed the Gates and Buffett Giving Pledge because he doesn't believe in throwing money at problems.
As the Wall Street Journal reports, while Slim was speaking at a conference in Sydney last month, he offered the following sentiment:
The only way to fight poverty is with employment. Trillions of dollars have been given to charity in the last 50 years, and they don't solve anything. ... To give 50 percent, 40 percent, that does nothing. There is a saying that we should leave a better country to our children. But it's more important to leave better children to our country.
Slim's sentiments echo those of the Dead Aid author and economist Dambisa Moyo, who argues that the half century or so of foreign aid to African nations has failed to address root problems. Although neither Moyo nor Slim believe aid should be eliminated altogether, they both suggest prioritizing job creation over throwing money at problems.