# Jack Bogle : L’investissement révolutionné

Summary of the Text:

This text discusses Warren Buffett‘s public praise of John Bogle, the founder of Vanguard and a pioneer of index fund investing.

Key points:

Buffett’s High praise: Buffett stated that Bogle “has probably done more for the American investor than any man in the contry,” estimating he saved investors perhaps hundreds of billions of dollars.
The Bet: This praise came after Buffett won a long-running bet regarding the performance of passive index funds versus actively managed funds.
Buffett’s Advocacy for Index Funds: Buffett has long been a critic of high fees charged by active fund managers and has consistently recommended that most investors choose low-cost index funds.
Bogle’s Impact: The text highlights Bogle’s role in making investing more profitable for the average person through the creation of accessible and low-cost index funds. Buffett considers Bogle an “underappreciated American hero.”

In essence, the article celebrates Bogle’s contribution to the investment world and Buffett’s acknowledgement of that impact, particularly in light of their recent bet and Buffett’s long-held beliefs about investing.