By Katie Atkinson
Updated November 30, 2013 at 12:00 PM EST

Over the course of his 25-year-plus acting career — which began with small TV roles when he was just a teenager in the mid-’80s — Paul Walker collected many friends and admirers in the industry. The Fast and Furious series star, who really made a name for himself in the late ’90s with movies like Varsity Blues and She’s All That, died Saturday afternoon in a car accident at age 40, and online reaction poured in from his acting friends and peers.

Read below for tributes to the late actor, including from Fast co-star Ludacris, Sarah Michelle Gellar (whose husband, Freddie Prinze Jr., starred alongside Walker in She’s All That), and past co-workers Matthew Lillard and Tyson Beckford.

“My heart is hurting so bad no one can make me believe this is real Father God I pray that you send clarity over this cause I just don’t understand My heart hurts it’s broken no one can convince me that this is real…. Prayer warriors please pray real hard for his only child, his daughter and family… #HeartOfAnAngel13YrsFamilyForeverWeJustCelebreatedYour40thBirthday….. My God… My God… I can’t believe I’m writing this”