Who said "Dreams deferred can become dreams denied."?

This quote is attributed to Govan Mbeki.

Dreams deferred can become dreams denied. - Govan Mbeki

"Dreams deferred can become dreams denied."

Govan Mbeki Dreams

Anti-apartheid Activist, Intellectual South African 1910–1983

"The greatest wealth is health."

"Education is the most powerful weapon which you can use to change the world."

"A nation that does not know its past cannot make wise decisions about its future."

"Freedom is not just the absence of chains."

"This is going to be a great show!"

"Dreams are what make life worth living."

"Never stop dreaming big."

"Dreams are what keep us going."