Even Charles Darwin had bad days. Also I'll put good money that he'd have used Tumblr were he around today.

@dutchbarracuda

Yeah, Darwin was never a well man. He experienced chronic illness symptoms his entire life. It disabled him significantly.

It's a testament to his perseverance that he had any good days and accomplished so much.

https://en.wikipedia.org/wiki/Health_of_Charles_Darwin

Health of Charles Darwin - Wikipedia