similia similibus curantur
similar things take care of similar things", let similar things take care of similar things
Notes
"like cures like" and "let like be cured by like"; the first form ("curantor") is indicative, while the second form ("curentor") is subjunctive. The indicative form is found in Paracelsus (16th century), while the subjunctive form is said by Samuel Hahnemann, founder of homeopathy, and is known as the law of similars.