We haven't failed. We now know a thousand things that won't work, so we are much closer to finding what will.
Of the 200 light bulbs that didn't work, every failure told me something that I was able to incorporate into the next attempt.
Invention is 1% inspiration and 99% perspiration
Genius is not inspired. Inspiration is perspiration.
The memory of my mother will always be a blessing to me.
Discontent is the first necessity of progress.