Kuala Lampur, Feb. 15 -- It was raining that afternoon. The kind of rain that makes you retreat into yourself, hands buried in pockets, head down, rushing to wherever you need to be.

I was waiting at a crosswalk when I saw it-a stranger holding out an umbrella for another. They didn't know each other, but for that moment, it didn't matter.

One had shelter, the other didn't. And so, without hesitation, the umbrella was shared.

It was a small, fleeting act, but one that stuck with me. Because isn't this what shelter is supposed to be?

Not just four walls and a roof, but something we hold out for others when they have none. A way to say: "You are safe here. I see you. You are not alone."

Maslow's hierarchy of needs tells us that shelter i...