A mathematics professor at Northern Virginia Community College, gives until it hurts.

Richard Semmler works two jobs to earn enough money to give away half of the $100,000 income he earns each year.

In addition to his monetary donations, Mr. Semmler volunteers every Monday night to help serve meals at the Central Union Mission, in Washington, DC.

The generous giving is made possible only because he orchestrates a frugal and simple lifestyle.

(WATCH the video below, from the Chronicle of Philanthropy)

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