Who said "Death is not an end but a transformation."?

This quote is attributed to Fidel Castro.

Death is not an end but a transformation. - Fidel Castro

"Death is not an end but a transformation."

Fidel Castro Death

President, Revolutionary Leader Cuban 1926–2016

"A revolution is not a bed of roses."

"Condemn me, it does not matter. History will absolve me."

"The revolution is not an apple that falls when it is ripe. You have to make it fall."

"I am a Marxist-Leninist and will be one until the day I die."

"Death doesn't scare me anymore."

"Death and I are old friends."

"Welcome to my world."

"Death is just the beginning."