95% sureThese words were traced back to where they first appeared. That source is listed below.
What turned up
The Montessori Method (1912 English translation), Ch. V opening — located verbatim in the Project Gutenberg full text (ebook #39863), not taken on a citation's word
Work
The Montessori Method
Occasion
1912 · N/A (educational treatise) · Montessori opening her chapter on discipline by describing children as beings who grow in body and in spirit together
Sources checked
gutenberg.orgChecked using claude-sonnet-5, 21 August 2026Project Gutenberg full text of The Montessori Method (1912), fetched and read directly