Humanity should respect animals.

[Tenet Nosce]

I disagree. My understanding is that compassion is indeed the lesson of 3D.

Questioner: I have a question here from (name). It states: “As we see compassion developing in ourselves is it more appropriate to balance this compassion with wisdom or to allow the compassion to develop as much as possible without being balanced”?

Ra: I am Ra. This query borders upon that type of question to which answers are unavailable due to the free-will prohibitions upon information from teach/learners.

To the student of the balancing process we may suggest that the most stringent honesty be applied. As compassion is perceived it is suggested that, in balancing, this perception be analyzed. It may take many, many essays into compassion before true universal love is the product of the attempted opening and crystallization of this all-important springboard energy center. Thus the student may discover many other components to what may seem to be all-embracing love. Each of these components may be balanced and accepted as part of the self and as transitional material as the entity’s seat of learn/teaching moves ever more fairly into the green ray.

When it is perceived that universal love has been achieved the next balancing may or may not be wisdom. If the adept is balancing manifestations it is indeed appropriate to balance universal love and wisdom. If the balancing is of mind or spirit there are many subtleties to which the adept may give careful consideration. Love and wisdom, like love and light, are not black and white, shall we say, but faces of the same coin, if you will. Therefore, it is not, in all cases, that balancing consists of a movement from compassion to wisdom.

We may suggest at all times the constant remembrance of the density from which each adept desires to move. This density learns the lessons of love. In the case of Wanderers there are half-forgotten overlays of other lessons and other densities. We shall leave these considerations with the questioner and invite observations which we shall then be most happy to respond to in what may seem to be a more effectual manner.

So, take that as you will. But we have here a query that directly asks about the balance between wisdom and compassion, and Ra replies that this density learns the lessons of love. Otherwise, the remainder of the quote looks to support what you have been saying, and which I haven't disagreed with.

This is why it's so difficult for humans to feel compassion for their younger 2D brethren.

It is difficult because feeling compassion for 2D entities is an advanced lesson in compassion.

But to say that compassion isn't a requirement at all (if that is what you're saying) is, in my humble opinion, a misinterpretation of the material.

No, that's not what I am saying. I find it unlikely that 3D graduates would have no green-ray activation. But is it impossible? Probably not.