People who don't work hard when they are young will be sad in vain when they are old.
Actually, it's that simple. But my favorite is the following paragraph:
No one does not cherish his life, but few people cherish his time. If you want to do something in your lifetime, learn something, enrich yourself, help others and make life meaningful and valuable, then don't waste time. Everyone knows this truth, but few people can really make good use of their time actively and unremittingly.
If you want to do your part in the remaining years, or gain some useful knowledge to improve yourself and help others, then time can't be wasted, so that your life will become meaningful and fruitful. All this is simple, but few people really try to make full use of their time.
-Liang Shiqiu "Time is Life"
There are many famous sayings that cherish time, many of which subtly convey the truth that time is a pity and time is precious. But I like Mr. Liang Shiqiu's remarks about time best.
Because when we are discussing the famous saying of cherishing time, most people can understand it, and I understand all the so-called reasons, but I still can't live this life well and can't fall into practice and action. But this passage of Liang Shiqiu talked about this. Few people don't cherish his life, but time is wasted unconsciously.
The so-called easier said than done, that's all.