I think i would rather a heart of ice than a heart of glass
Glass is translucent and fragile
When it breaks, it can so easily hurt anyone who comes upon it
Ice, though similar, is exceptionally different
It can be either clear or cloudy
Or it can hurt or sooth
I like it most because unlike glass, it can melt when given enough warmth
While yes, ice is cold, it's still only water hardened by its surroundings