Who said "I've learned a lot in life, mostly from making mistakes."?

This quote is attributed to Kelso.

I've learned a lot in life, mostly from making mistakes. - Kelso

"I've learned a lot in life, mostly from making mistakes."

Kelso Wisdom

"I'm not stupid, I'm just not thinking."

"That's what I love about these high school girls, man. I get older, they stay the same age."

"I'm a sexy beast."

"My brain is on fire."

"I'm not angry, I'm just disappointed."

"The best things in life are free."

"You can't have everything in life, but you can have what matters most."

"A woman's intuition is rarely wrong."