May 20 at 7:00 AM

When my daughter got home from school yesterday, she made a cozy nest of pillows, pulled out her crayons and started to draw.

“Mommy,” she complained, “the music is too loud. I need to focus.”

To which her little brother predictably replied, “I want too loud! I like too loud! TOO LOUD PLEASE!”

My husband and I are raising two curious, caring kids — who happen to have fundamentally different temperaments.

Thankfully, temperament and character are not synonyms. No matter our personality, most of us can learn to be kind, responsible, and hard-working. But one’s basic temperament — particularly our response to stimuli — seems rooted in biology.

Think of the seven dwarfs. Doc is an extrovert, Bashful is an introvert, and Grumpy is a natural skeptic — but they all choose to work hard, respect each other and protect strangers in distress. Seven decent people with different approaches to life.

That said, it must have been a challenge to be the dwarfs’ mother.

Our daughter was only a few weeks old when I began to notice her heightened sensitivity to sound — a reaction that some research links to later introversion. Shutting cabinet doors would startle her awake, and the blender terrified her. Her first full sentence was, “What’s that sound?”

At her first toddler tumbling class, she spent 15 minutes clutching my skirt. Then she mimicked the actions of the students from the safety of the back wall. Finally — after sizing up her teacher, her peers, and the relative safety of the activity — she happily joined the group for the last five minutes.

This is how she has approached almost every novel situation since infancy: observing before engaging. I got pretty good at helping her navigate new experiences in ways that stimulated her without being overwhelming. And then came child No. 2.

On my son’s first beach trip, as I was coaxing his sister to dip her feet in the water, he threw open his arms and toddled headlong into the waves. That’s his basic approach to life: dive in — and then scream for help if necessary.

Sometimes it has felt like whiplash parenting — pulling the toddler off a playground ladder while encouraging the preschooler to take “one more step” up the climbing wall. She perches watchfully while I vacuum; he tries to climb on and go for a ride.

We have a lot of shorthand for different temperaments. I often hear kids described as shy or bossy — or all-boy or all-girl. But these labels are laden with cultural baggage, and they put a box around children who are just beginning to explore who they are.

Every temperament brings with it strengths and possibilities. In Susan Cain’s essay, “Don’t Call Introverted Children ‘Shy,’ ” she writes that some children are “born with a careful, sensitive temperament that predisposes them to look before they leap. And this can pay off handsomely as they grow, in the form of strong academics, enhanced creativity and even a unique brand of leadership and empathy. . . . [T]hese kids are not antisocial. They’re simply sensitive to their environments.”

I am trying to create an environment that will allow both my kids to thrive — one that gives them the space to be themselves and the tools to “work it out” together. Sometimes my strategies work better with one than the other.

But I wonder if, in the end, their differences can be a source of strength. Perhaps their close relationship will give them a measure of empathy toward those who respond to the ebbs of life a little differently than they do.

On a recent visit to a small creek, my son persuaded his sister to wade into the water — and she got him to stop throwing rocks long enough to watch a heron catch a fish. And I thought of Cain’s comment that the best scenario “is when those two toddlers — the one who hands you the toy with the smile and the other who checks you out so carefully — grow up to run the world together.” Or as the Seven Dwarfs illustrate: No matter our temperament, we can find a way to live together and whistle while we work.