Who said "I've worked too hard to give up now."?

This quote is attributed to Usain Bolt.

I've worked too hard to give up now. - Usain Bolt

"I've worked too hard to give up now."

Usain Bolt Perseverance

Professional Sprinter Jamaican Born 1986 (age 40)

"To be a champion, you have to believe in yourself when no one else does."

"Don't think about losing. Just think about winning."

"I'm a living legend."

"Volleyball is my life."

"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."