1879-1955 AD Albert Einstein [WQSB]

Wikipedia link

“So far as the laws of mathematics refer to reality, they are not certain. And so far as they are certain, they do not refer to reality.”

Einstein quoted from “Geometry and Experience” by Bart Kosko, Fuzzy Thinking, p. 3. From experience, I agree with this.

Feynman Lectures cover classical physics. (Books on web).

Susskind Lectures cover special and general relativity.