Théophraste is the French form of Theophastos. The -phrastos part is related to speaking.
Here are some articles that include the etymology of the name, but each phrases it differently:
http://encyclopedia2.thefreedictionary.com/Theophrastoshttp://www.mlahanas.de/Greeks/Theophrast.htmhttp://en.wikipedia.org/wiki/Theophrastus
~~~~~Amanda~~~~~Midnight stands darkly on the road,
and burdened by stars, tumbles down.
You can't step beyond your fence
without trampling the universe.
-"The Steppe" Boris Pasternak