“I know also that still more interesting discoveries will be made that I have not the imagination to describe — and I am awaiting them, full of curiosity and enthusiasm.”
Lecture at Yale University, "Chemical Achievement and Hope for the Future." (October 1947) Published in Science in Progress. Sixth Series. Ed. George A. Baitsell. 100-21, (1949).
1940s-1960s
Context: Science cannot be stopped. Man will gather knowledge no matter what the consequences – and we cannot predict what they will be. Science will go on — whether we are pessimistic, or are optimistic, as I am. I know that great, interesting, and valuable discoveries can be made and will be made… But I know also that still more interesting discoveries will be made that I have not the imagination to describe — and I am awaiting them, full of curiosity and enthusiasm.
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Linus Pauling 19
American scientist 1901–1994Related quotes
Julius Sumner Miller, in What Science Teaching Needs, Junior college journal, volume 38 (1967), by American Association of Junior Colleges, Stanford University.
Context: My view is this: We teach nothing. We do not teach physics nor do we teach students. (I take physics merely as an example.) What is the same thing: No one is taught anything! Here lies the folly of this business. We try to teach somebody nothing. This is a sorry endeavour for no one can be taught a thing.
What we do, if we are successful, is to stir interest in the matter at hand, awaken enthusiasm for it, arouse a curiosity, kindle a feeling, fire up the imagination. To my own teachers who handled me in this way, I owe a great and lasting debt.

“I also am other than what I imagine myself to be. To know this is forgiveness.”
Source: Simone Weil : An Anthology (1986), Void and Compensation (1947), p. 200

“The only thing I know is this: I am full of wounds and still standing on my feet.”

Just As I Am : The Autobiography of Billy Graham (1997) co-written with Cliff Barrows
Context: I don’t know the future, but I do know this: the best is yet to be! Heaven awaits us, and that will be far, far more glorious than anything we can ever imagine. I know that soon my life will be over. I thank God for it, and for all He has given me in this life. But I look forward to Heaven. I look forward to the reunion with friends and loved ones who have gone on before. I look forward to Heaven’s freedom from sorrow and pain. I also look forward to serving God in ways we can’t begin to imagine, for the Bible makes it clear that Heaven is not a place of idleness. And most of all, I look forward to seeing Christ and bowing before Him in praise and gratitude for all He has done for us, and for using me on this earth by His grace — just as I am.

How not to create tigers http://dx.doi.org/10.1063/1.882769, Physics Today, Volume 52, Issue 8, August 1999, p. 11

“The imagination has made more discoveries than the eye.”
"How it came about?" from Anarchism Is Not Enough (London: Jonathan Cape, 1928)