Is sanity rational?

[Mudhammam]

Okay, so what's the congruity between "I am extremely important, and must be protected, respected and valued" and "The universe consists of trillions of stars and billions of galaxies. One of the stars has a little watery rock orbiting it, and on this rock are trillions of living things, of which I am one."

Is feeling that one is important sane?

In the following contexts, "I am extremely important to myself, or to my loved ones, etc.," yes, that is sane, rational, and healthy. "I am extremely important because..." "...I am one of five hundred people whom the species depends on for its survival," or "I am making an indispensable contribution to my fellow beings whose lives largely depend on my existence," again, yes.

However, "I am extremely important on the basis of an absolute, universal principle that applies to, first and foremost, myself, and even at the expense of the other trillions of living things," no, that is not sane, rational, or healthy.