The world is mourning the loss of George Harrison this week, who died from cancer at age 58.

Harrison’s last moments were at a friend’s house in Los Angeles. He passed at 1:30 pm on Thursday with his wife and son by his side.

“I am devastated and very, very sad,” said Beatles band-mate Paul McCartney. “He was a lovely guy and a very brave man and had a wonderful sense of humor. He is really just my baby brother.”

“He left this world as he lived in it, conscious of God, fearless of death, and at peace, surrounded by family and friends,” a family friend told the Associated Press. “He often said, ‘Everything else can wait but the search for God cannot wait, and love one another.’ “

Although he was known as “the quiet one,” Harrison’s impact on the music world is anything but. Some of the Beatles best-known songs were written by Harrison — such as “Here Comes The Sun,” “Taxman.” “Within You, Without You,” and “While My Guitar Gently Weeps.” He also taught John Lennon how to play guitar when they were with the pre-Beatles band The Quarry Men.

“When I joined, he didn’t really know how to play the guitar; he had a little guitar with three strings on it that looked like a banjo,” said Harrison in 1998. “I put the six strings on and showed him all the chords — it was actually me who got him playing the guitar. He didn’t object to that, being taught by someone who was the baby of the group. John and I had a very good relationship from very early on.”

Harrison’s post-Beatles accomplishments include a producing credit on Monty Python’s “Life of Brian,” and the formation of The Traveling Wilburys with Bob Dylan and Roy Orbison. He also organized the concert for Bangladesh in New York.

A private ceremony for Harrison has reportedly already taken place, however no details have been released. There is no word yet about a public funeral.