None of my inventions came by accident. I see aworthwhile need to be met and I make trial after trial until it comes. What it boils down to is one percent inspiration and ninety-nine percent perspiration.(我的每项发明都不是凑巧得来的。当我看到有些值得满足的需求时,我会一次次不厌其烦地尝试,直到把事情做成。这要归结于 1% 的灵感和 99% 的汗水。)