This table is for reference. The relevant web page is here.
| 0 | Original | L'essentiel est invisible pour les yeux. | |
| 1 | Woods 1943 | What is essential is invisible to the eye. | |
| 2 | Cuffe 1995 | What is essential is invisible to the eye. | |
| 3 | Testot-Ferry 1995 | What is essential is invisible to the eye. | |
| 4 | Wakeman 1997 | What matters is invisible to the eyes. | |
| 5 | Howard 2000 | Anything essential is invisible to the eyes. |
See these sentences split up into individual elements (ignoring word order).