"We haven't failed. We now know a thousand things that won't work, so we are much closer to finding what will."
I think it means that you can't fail until you give up so don't give up. Thomas Edison tried about 400 different ways to invent the lightbulb and then he finally got it. His saying was " I didn't fail to invent the lightbulb, I found 400 different ways not to invent the lightbulb. I like this one because I can relate to it. I sometime struggle and I always tell myself not to give up because if you give up your only giving up on yourself.