The quote "We are kept keen on the grindstone of pain and necessity" from H.G. Wells' "The Time Machine" reflects the idea that human progress and survival often come at the cost of enduring hardships. Pain and necessity can serve as powerful motivators that push individuals to adapt, innovate, and improve their circumstances. This emphasizes a universal truth about the human condition: challenges often spur growth and development, shaping our experiences and choices.

This perspective suggests that while suffering is an inevitable part of life, it also fosters resilience. Wells' exploration of these themes in his writing illustrates how the struggles we face can lead to greater understanding and advancement. The grindstone metaphor emphasizes the relentless nature of these challenges, serving to remind us that through perseverance and adaptation, we can emerge stronger and more capable of navigating the complexities of existence.