The periodic table is a testament to human curiosity and ingenuity.

The whole problem with the world is that fools and fanatics are always so certain of themselves， and wiser people so full of doubts.

心灵是一个不断重组的系统。

预测未来的最好方法就是创造未来。

"Sometimes, the hardest part isn't letting go but rather learning to start over."

人在幼年时，精神专注敏锐，成年后思想容易分散，因此教育要趁早，不可错过时机。