Who said "The imagination is the only frontier that has no walls."?

This quote is attributed to Boris Pasternak.

The imagination is the only frontier that has no walls. - Boris Pasternak

"The imagination is the only frontier that has no walls."

Boris Pasternak Imagination

Poet Novelist Russian 1890–1960

"If I were not a physicist, I would probably be a musician. I often think in music. I live my daydreams in music."

"Art has two constant, two witnesses: the silence and the beauty."

"Man is born to live, not to prepare for life."

"The whole of life is symbolic because the whole of it has meaning."

"Imagination is more powerful than knowledge."

"The world is full of wonders if you know where to look."

"You have the imagination of a child, Lucy"

"The world is full of mysteries waiting to be solved."