Who said "Death is simply the end of a timeline's usefulness."?

This quote is attributed to Time Variance Authority.

Death is simply the end of a timeline's usefulness. - Time Variance Authority

"Death is simply the end of a timeline's usefulness."

Time Variance Authority Death

"Pruning timelines is not destruction; it is necessary maintenance of the sacred timeline."

"Your actions have consequences that ripple across all of reality."

"Free will is an illusion maintained for the comfort of the ignorant."

"We are bound by duty to protect what is predetermined."

"Death doesn't scare me anymore."

"Death and I are old friends."

"Welcome to my world."

"Death is just the beginning."