Grandiose Ideas = Visionary
He/she is schizophrenic = Multitasker capable of compartmentalizing.
Nobody but him/her thinks this hairbrained scheme is going to work, but he/she just keeps working on it. = Committed
Nobody has ever tried that before, and their is probably a reason. = Thinking outside the box.
Why does he/she want to start a business, when he/she could just work at the mill like everyone else? = Not willing to settle for less, when the world is filled with endless possibilities.
He/she is crazy! = He/she is more creative/optimistic/forward looking than the haters, so the haters falsely judge him/her.
Hater To Entrepreneur Translations Volume #2- https://therealmjtheterrible.com/hater-to-entrepreneur-translations-volume-2/