Arthur C. Clarke (1917-2008) was a British writer best known his contributions to science fiction. The rest of this post is 3 quotes from Clarke.
2. "When a distinguished but elderly scientist states that something is possible, he is almost certainly right. When he states something is impossible, he is very probably wrong." (Hazards of Prophecy: The Failure of Imagination, 1962)
3. "In my time I've been very fortunate to see many of my dreams come true! Growing up in the 1920s and 1930s, I never expected to see so much happen in the span of a few decades." (90th Birthday Reflections, 2007)