Kaddish: Its Meaning (and Pets)

My cat recently died, and I want to know if it’s appropriate for me to recite the kaddish prayer for her? In case this sounds ludicrous allow me to explain. My ex-wife and I never had children, and we have been divorced for nearly 10 years. Through this past, painful decade, this cat has been a big part of my life; she gave me a lot more than I gave her. She gave me connection, she was a cure to my loneliness, and she gave me something to love. Now all that’s gone and all that remains is a hole of loneliness. I know sitting shiva would be going too far, but I thought that going to say kaddish for her would make up for some of that loss.

Kabbalah, Gematria, Holiness (and Maimonides)

I recently heard a class which left me very confused. The instructor, who claimed to be an orthodox rabbi, spoke about Maimonides’ rejection of Mysticism. Among the mystical ideas that he supposedly rejected was that:
The Hebrew language is intrinsically holy [citing the Talmud and Mishna as being against this, i.e. the concept of gematria, etc.]
The Jewish people are a holy nation
The Torah or mitzvot contain any intrinsic holiness, [there’s no intrinsic difference between the Torah and Shakespeare]
The Land of Israel has any intrinsic holiness. He taught that to believe any of the above is idolatrous since it is assigning godliness to things that don’t have it, which is precisely why Maimonides waged a war against these ideas which are truly foreign to traditional Judaism.
So perhaps you could clarify:
Are the above ideas mystical/idolatrous ideas?
Was Maimonides really against mysticism, [as was the Talmud, according to this presenter]?

Kabbalah

I have noticed that you often offer explanations to the Torah from the “Kabbalists” or “Kabbalistic Masters”. Who are these people and how do they differ from the standard rabbinical analyses and explanations? Are they Jewish mystics?

The Sanctity of the Human Body

You recently argued, in two columns regarding the “Bodies” exhibit, that displaying dead bodies, in your opinion, flies in the face of the sanctity of the human body. I have trouble fathoming what sanctity there is to the human body any more than any other animal body. I assume you would not take such issue with an exhibit of animal bodies showing their anatomy. I would like to understand why your perspective is so different for humans, necessitating burial and nothing else.

Yahrzeit

What is the basis for honoring a person’s life on the anniversary of their death? Acknowledging the birthday seems like a nicer way to go.