Who said "I must persevere through every setback and failure."?

This quote is attributed to Dexter.

I must persevere through every setback and failure. - Dexter

"I must persevere through every setback and failure."

Dexter Perseverance

"What does this button do?"

"I must focus on my work."

"Science rules!"

"Dee Dee, get out of my laboratory!"

"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."