My four-month-old has started teething, just as my first born loses his first tooth. I see my baby next to my five-year-old and I think “everything they told me is true.”  

Don’t blink. 

It goes by so fast. 

Snuggle them while you can. 

Babies don’t keep. 

There is my five-year-old is carrying his tooth around in a little glass jar for safe keeping, until he can place it under his pillow tonight. It’s one of those mind-blown, how-did-we-get-here things. I have a vivid memory of when that same tooth first came in. How was that not just yesterday?