Genuinely one of the smartest people I have ever met, a former professor with multiple doctorates, got his lunch every day by digging in the trash outside his building and piecing together a meal from half eaten leftovers. He'd microwave it to sterilize.

He also once gave me a fairly nice designer shirt (not the logo kind, actually nice), which he picked up at the bus stop covered in vomit, took home, and cleaned.

At one point, he walked into the lab with a clearly used bowl reeking of marijuana, said he found it in a trash can, and had us analyze the THC content and alkaloid ratios as an exercise, because he had a DEA license.

Lived into his 90s, was a self-made multi-millionaire, and spent his money on funding his research. Also he was fanatical about proper reduce, reuse, recycle. And he would get very pissed if you skipped those first two and went straight to recycle.