Charlie Munger, the investing sage who made a fortune even before he became Warren Buffett’s right-hand man at Berkshire Hathaway, has died at age 99.

Munger was a real estate attorney, chairman and publisher of the Daily Journal Corp., a member of the Costco board, a philanthropist and an architect. He was a close friend and confidant of Buffett, and the two men worked together for over 50 years.

Munger was known for his sharp wit and his deep understanding of value investing. He was a fierce critic of Wall Street’s excesses, and he often warned investors about the dangers of speculation.

In addition to his work at Berkshire Hathaway, Munger was also a successful investor in his own right. He made a fortune by investing in undervalued companies, and he was a pioneer in the use of options.

Munger was a generous philanthropist, and he donated millions of dollars to educational and charitable causes. He was also a passionate advocate for architecture, and he designed several buildings, including the Munger Graduate Residence at Stanford University.

Munger was a true Renaissance man, and he will be deeply missed by all who knew him.