Who said "You have to know when to hold on and when to let go."?

This quote is attributed to Derek Shepherd.

You have to know when to hold on and when to let go. - Derek Shepherd

"You have to know when to hold on and when to let go."

Derek Shepherd Wisdom

"It's a beautiful day to save lives."

"Pick a big one. Go big or go home."

"The human body is an amazing machine."

"Excellence is not a destination; it is a continuous journey that never ends."

"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."