“It always seems impossible until it's done.”
“The worst-case scenario always seems impossible until it actually happens.”
“Everything is theoretically impossible, until it is done.”
“When it's done, it's done. And no one will know until it's done.”
“Magic is always impossible.... It begins with the impossible and ends with the impossible and is impossible in between. That is why it's magic.”
“It's not done until it ships.”