Sure, like the wind is sure
when it blows a little breeze.
Sure, like the sun is when
it shines down upon us.
Sure, like an architect is sure
when he looks at blueprints.
Sure, like a mother bear is sure
that her kids are safe.
Sure, like when the universe was sure
it could support life on some planet, somewhere out there.
How can we be sure, but still be uncertain?