“make haste slowly” (sometimes rendered in English as “more haste, less speed.”
The constructive intent of the phrase is that activities should be performed with a proper balance of urgency and diligence. If tasks are overly rushed, mistakes are made and good long-term results are not achieved.
By Arminiuzz – Own work, CC BY 3.0, https://commons.wikimedia.org/w/index.php?curid=7353046
The emblem of the dolphin and anchor which has been used since Roman times to illustrate the adage. This example is the printer’s mark of Aldus.