“The first requisite for success is the ability to apply your physical and mental energies to one problem incessantly without growing weary.”
More from Thomas Edison
“Look, I start here with the intention of going there.”
“The speed of recovery was almost as spectacular as the disaster.”
“I'm 67, but I'm not too old to make a fresh start. I've been through a lot of things like…”
“All you got to do is stick to it and work like hell.”