“The only performance that makes it, that makes it all the way is the one that achieves madness.”

“If you fear making anyone mad, then you ultimately probe for the lowest common denominator of human achievement.”

“Madness is tonic and invigorating. It makes the sane more sane. The only ones who are unable to profit by it are the insane.”

“Sometimes it’s only madness that makes us what we are.”

“Myself, I suspect it’s a kind of madness: the madness that makes one repeat whatever one is trained to repeat.”

“There are only two mistakes one can make along the road to truth; not going all the way, and not starting.”

“There is only one way to achieve happiness on this terrestrial ball, and that is to have either a clear conscience or none at all.”

“There is only one way to make money at writing, and that is to marry a publisher's daughter.”

“In creating, the only hard thing's to begin;
A grass-blade's no easier to make than an oak,
If you've once found the way you've achieved the grand stroke.”

“The only way that you achieve what you want and to fulfill your dreams and become great is by demanding that sort of attention. You have to make it happen.”