I hope you’ve never thought of me this way [note sarcasm].

abstruse (ab·struse): / ab STROOS /
adjective

(1) difficult to understand; obscure; esoteric

[Via French from Latin abstrusus from Latin abstrudere meaning “to thrust away,” from Latin trudere meaning “to thrust.”]

Usage: A significant amount of Stephen Hawking’s work is documented in abstruse calculations, yet he is very capable of translating such information into text more easily digested by the masses.