Losing your shadow

Do you know what losing your shadow feels like? (No, being located at the equator on either of the equinoxes doesn't count). Think about it, wouldn't it be strange, if you one day noticed that something that always used to be there, something that you took for granted, was gone? You never really thought about the presence of your shadow - maybe you paid attention to it once in a while when you were a kid, and you were fascinated by the way it moved when you walked under the streetlights when it was dark - and now you regret it. Now you actually see how much your shadow meant to you. Now you realize that you won't really be able to live without it. Now you miss it...

Now you understand how important each factor is in science, how important every single organism is in the circle of life, how important each individual is for society. How much they mean to you. Hopefully, you mean a lot to them too. But most importantly:

never take things or people for granted.