Hmmmm, that IS a good one jcsd... let's see if I'm up to scratch!
One day Mr. Newton
Took a file from his drawer
Showing he'd invented calculus
Twenty years before!
Everyone got interested
Took the integral of one
And worked backwards with derivatives
Until they were left with none.
They found out if they looked
They found calculus all around
An idea which, quite simply,
Truly is profound.
Now it is years later
And calculus still rings true
Which means we all owe Newton
A very big thank you!