In Einstein’s book, Cosmic Religion and Other Opinions and Aphorisms, he writes:
At times I feel certain I am right while not knowing the reason. When the eclipse of 1919 confirmed my intuition, I was not in the least surprised. In fact, I would have been astonished had it turned out otherwise. Imagination is more important than knowledge. For knowledge is limited, whereas imagination embraces the entire world, stimulating progress, giving birth to evolution. It is, strictly speaking, a real factor in scientific research.
Knowledge, of course, is very important, but don’t let what you know limit you.
Einstein also said, "Imagination is everything. It is the preview of life's coming attractions."