quotes of inventors

[Doris Smith <dorsmith@TIAC.NET>]

One of our parents is working with a second grade class on inventions and
inventors...she is looking for "quotable" quotes made by inventors or
scientists at the time of a great discovery such as "Eureka".
We have checked different books of quotations and looked through
biographies of different inventors and scientists.  Any more suggestions?
Thanks in advance,
Doris Smith
dorsmith@tiac.net