Every obstacle is merely fuel for my determination. - Dr. Robotnik

"Every obstacle is merely fuel for my determination."

Dr. Robotnik Perseverance

More from Dr. Robotnik

"I am the world's greatest scientific genius!"

"Sonic, you blue pest, I'll get you yet!"

"Roboticize the world!"

"Science is the key to ultimate power."

"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."