"On the afternoon of October 19, 1899, I climbed a tall cherry tree and, armed with a saw which I still have, and a hatchet, started to trim the dead limbs from the cherry tree. It was one of the quiet, colorful afternoons of sheer beauty which we have in October in New England, and as I looked towards the fields at the east, I imagined how wonderful it would be to make some device which had even the possibility of ascending to Mars. I was a different boy when I descended the tree from when I ascended for existence at last seemed very purposive."
- Robert Goddard, father of modern rocketry
"It is difficult to say what is impossible, for the dream of yesterday is the hope of today and the reality of tomorrow." (From his high school graduation oration, "On Taking Things for Granted", June 1904)