(CNN) -- As Desmond Tutu celebrates his 80th birthday, iReporters from across the world have shared their memories and moments with the charismatic peace activist and Nobel laureate.
As well as wishing the Archbishop a happy birthday, many described the lasting impressions Tutu has made on them.
While some recall Tutu's "passion for peace," other describe his "immense kindness" and almost all mention his "sense of humor" and "infectious laugh".
Chelsea Breana Bailey remembers giving Tutu a birthday card for his 79th birthday in Cape Town, South Africa.
"The world seems to only see Tutu as a revolutionary and outspoken anti-apartheid activist," Bailey said. "But it's important to remember that he's just a man -- the kind of person who gives a stranger a hug for a birthday card."
Emma Smith, who met Tutu aboard a ship during a four-month study program called "Semester at Sea," says the Archbishop was fondly referred to by all as "Arch."
But what made a lasting impression on Smith was the inspirational speech Tutu gave to the assembled students, "You are young and full of promises," he said.
"Don't let anyone look down on your dreams. Believe you are making a difference, because you are. Dream, dream, dream. Dream the craziest of dreams!'"
Happy Birthday Desmond Tutu (or should we say "Arch")!