What is the Latin translation of “healing is not linear”?

I’ll take a different template, with Alberto Yagos’ as an inspiration.

When Ptolemy I asked if there were any shortcuts for plodding through the Elements, Euclid supposedly said, “there is no royal road to geometry”: Euclid – Wikiquote

The first Latin translation of the quote is Non est regia ad Geometriam via.

Non est regia ad curationem via? “There’s no royal road to healing”?

Or tweaking Alberto Yagos’ proposal, “the road to healing is not straight”: Via ad curationem non recta est.