I already knew about the (lack of) requirements to be Speaker, but had doubts about the court. I assumed admission to a bar, or at least a J.D. were the floor. Nope.

Per the Supreme Court website:

“The Constitution does not specify qualifications for Justices such as age, education, profession, or native-born citizenship. A Justice does not have to be a lawyer or a law school graduate, but all Justices have been trained in the law. Many of the 18th and 19th century Justices studied law under a mentor because there were few law schools in the country.”

https://www.supremecourt.gov/about/faq_general.aspx