Let her know that your heart is bigger because it’s older so you have more room for love.

I have peer-reviewed this paper and found it to be accurate.

I like how visually she thinks about it

Smart kid. She's right.

I would not recommend arguing with a little kid, but I have to point out that capacity for feeling is something that can be developed, like a muscle. The more you use it, the bigger and stronger it gets. It can similarly atrophy if under-exercised, perhaps due to neglect or injury.

As a math Ph.D seems rigorous enough to me, most differential geometry proofs have parts that look like this

Joke's on you, kid, I love you even more now

Hugo is kinda getting left out, though, isn't he?

According to Internet etiquette you should start personally insulting her now that she's won the debate.

Its a good argument. I sorta don't want to share what her argument means for the future though.

Bold of her to assume she loves her "other experiences."

She mixing up the heart and the brain?