过去不是可以返回的地方，而是用来构建的材料。
"El pasado no es un lugar al que volver, sino una materia con la que construir."
If you want to get smart, the question you have to keep asking is 'why, why, why?'
Survival can be summed up in three words—never give up. That's the heart of it really. Just keep trying.
The weight of stone is nothing compared to the weight of responsibility we carry.
数学语言是通用的，超越了文化和语言的障碍。