The cause of the tension between Hooke and Newton

Remember when I said Hookedabbled in many different fields?Well, after Newton published a groundbreaking book on how planets move due to gravity,Hooke made the claim that Newton had been inspired by Hooke's work in physics.Newton, to say the least,did not like that,which sparked a tense relationship between the two that lasted even after Hooke died,as quite a bit of Hooke's research --as well as his only portrait --was ... misplaced, due to Newton.Much of it was rediscovered,thankfully, after Newton's time,but not his portrait,as, sadly, no one knows what Robert Hooke looked like.Fast-forward to the 1800s,where two German scientists discovered something that today we might find rather obvious,but helped tie together what we now know as the cell theory.