Who said "I think the most important thing is to never give up."?

This quote is attributed to Jim Halpert.

I think the most important thing is to never give up. - Jim Halpert

"I think the most important thing is to never give up."

Jim Halpert Perseverance

"I'm not superstitious, but I am a little stitious."

"That's what she said."

"You took me by the hand, made me a man."

"I'm in love. I don't know how it happened, but I'm in love with Pam."

"Perseverance is the key to success."

"Don't give up on what you believe in."

"I've been through worse."

"You learn to live with the pain."