该句使用时间状语从句与情态动词结构，表达建议与行为规范。
Many people strive deliberately for so-called happiness; even when they achieve it, the cost is often immense. Many philosophers suggest that happiness is a sensation. This feeling diminishes as satisfaction increases, and it is closely tied to one's state of mind and attitude. As the ancients said, "得之愈艰、爱之愈深", when experiencing happiness, one should often reflect on the hardships endured to attain it. To never feel happiness is one's greatest tragedy.
许多人都在刻意追求所谓的幸福，即便有时能够得到，付出的代价也往往巨大无比。许多哲学家认为，幸福本质上是一种感觉。这种感觉会随着满足感的提升而逐渐递减，并与个人的心境和心态密切相关。先哲们曾言：“得之愈艰、爱之愈深”，在拥有幸福时，应当常思其得之不易。一个人若始终无法感知幸福，实乃人生最大的悲哀。
"Mistakes are the seeds of future trouble."
"People often find Truth after repeatedly knocking on the doors of Error."
"In today's fast-paced world, who can afford to stop and feel the changes in nature"
"Those who are not accustomed to reflection must be accustomed to regret."
"Regret is a way to analyze past actions."