Obviously that person knows nothing of Charlotte Mason or her work! 😉
I have heard of people who try to make a Charlotte Mason education completely secular, but I think that it would be hard to do her philosophy justice without religion (which ever doctrine/denomination you choose to follow). She constantly refers to Christ and scripture in her writings. She is full of love for and in Christ and all her philosphy leads back to worshipping God. She often had the children reading from both the Old and New Testaments, and talks about how math and science both prove that there is a Creator.
As for liberal, I find it interesting how much people’s understanding and attitudes of that word have changed in the last 90-100 years. =) If you told me that my children were having a liberal education in PS, I’d be concerned, whereas I can say that my children are getting a liberal CM education and I would understand that meant my children were being exposed to a WIDE (or liberal) variety of important ideas OF WORTH and beautiful music, art, and the written word in its many forms. 😉
As mentioned above, CM advoated teaching ALL children, no matter their “station in life’. She contended that a coal miner, a scullery maid, and a weathly child all had the ability to learn, grow and achieve beyond their stations if taught. She wanted to give ALL of them a liberal eduation – one that involved art appreciation and creative art, music appreciation and playing instruments, ancient and modern history, math and how it is applicable in all our lives, nature and science, poetry, hymns, scripture study, Shakespeare and Plutarch, life skills, teaching correct habits, etc. She felt that it was as important to feed spirits and minds as much it was to feed little bodies.
Have you personally read any of her works in her own words? It will make it easier to decide for yourself if you go to the original source. =)
Try reading the first few pages of Home Education linked here (scroll down past the table of contents). Scan through and see what she has to say. It will give you a fairly good idea of how she feels about the importance of teaching children about Christ.