Sorry. I misunderstood you.
Your comparison of my thoughts is interesting. I didn't think to align them that way. Kinda cool, actually...
But they do mean different things.
By heart, I meant specifically feeling kindness toward weak people and even toward the weaker side of human nature, like cutting friends some slack when they mess up. (Maurone, if he reads this, knows exactly what I mean.) There are limits and contexts, of course, but just as presuming innocence until proven guilty is a default attitude for fairness, I believe in kindness as a default for enjoying good human relationships.
It's not very Objectivist, in fact, some frown on it in our subculture, but I find compassion to be a value. Neuroscience and psychology are already showing evidence that it is a healthy habit to cultivate.
In other words, it's very selfish to do that. And you tend to live longer.
Rand's point in her anti-altruism campaign is a good one, though. Don't let manipulators pollute your ethics with their sweet poison version of it.
btw - I'll get to your puppy parable in a day or two at the max.