If the eyes had no tears. Minquas saying Hot has no meaning, without the chill of cold.
Deadlines lose importance, when they become the norm.
Sunrise and sunsets exist only where light and dark collide in beauty. Like figures captured in old photos, we, and all around us, are made possible only by contrast. It's not just that thirst makes water sweeter, or that hard work makes relaxation more enjoyable. It's that without thirst there is no need for drink, without effort, no need for rest. For starters, at the most mundane of levels, problems exist to make problem solvers valuable.