Who said "Death is the only certainty in life."?

This quote is attributed to Spock.

Death is the only certainty in life. - Spock

"Death is the only certainty in life."

Spock Death

"Logic is the beginning of wisdom, not the end."

"I have been, and always shall be, your friend."

"The needs of the many outweigh the needs of the few."

"Insufficient data for meaningful answer."

"Death doesn't scare me anymore."

"Death and I are old friends."

"Welcome to my world."

"Death is just the beginning."