Who said "Death isn't an ending, it's part of the journey."?

This quote is attributed to The Flash.

Death isn't an ending, it's part of the journey. - The Flash

"Death isn't an ending, it's part of the journey."

The Flash Death

"My name is Barry Allen, and I am the fastest man alive."

"You can't save everyone. Sometimes you have to let people go."

"I'm fighting so that no one else has to suffer like I did."

"Life doesn't give you second chances. So I'm making my own."

"Death doesn't scare me anymore."

"Death and I are old friends."

"Welcome to my world."

"Death is just the beginning."