Randy Pausch, who became famous with his “Last Lecture” series, becoming a YouTube phenomenon, died on July 25 of pancreatic cancer. The Carnegie Mellon computer science professor was only 47. He was diagnosed with the cancer in September 2006.

According to USA Today, Randy Pausch, a founder of the Entertainment Technology Center, died Friday of complications from the pancreatic cancer. He died at his home in southern Virginia.

The professor’s most important achievement, beside "The Last Lecture" was the creation of a free computer programming tool for children called Alice. Last September Pausch spoke to about 400 faculty and students at Carnegie Mellon, telling them stories about his childhood and saying that he wanted to help his children to achieve their goals.

In an interview for USA Today, Pausch said that the famous lecture was not made for his students or for the public, but for his children Dylan, 6, Logan, 3, and Chloe, 2.

“If people are finding inspiration, OK, but the book is for my kids.”

His wife Jai thanked the people who gave their support to her husband, saying that “Randy was so happy and proud that the lecture and book inspired parents to revisit their priorities, particularly their relationships with their children.”

“The Last Lecture” has become a best-selling book since it was published in April. The book has been translated in 30 languages and about 3 million copies are in print.

President Bush was moved by Randy Pausch‘s story and honored him in a letter.

“Your love of family, dedication in the classroom, and passion for teaching will stand as a lasting legacy, and I am grateful for your willingness to serve,” said the letter.

Also Time magazine put Pausch on the list of the 100 most influential people in the world. More than 10 million people have watched the Internet video of the talk.

Randy Pausch is survived by wife Jai and children Dylan, Logan and Chloe.