拾起小石去碰碰那条链子，然后不看看变化与否，又把它扔掉，这已成了习惯；就是这样，这疯子找到了又失掉了那块点金石。

It had grown into a habit, to pick up pebbles and touch the chain, and to throw them away without looking to see if a change had come; thus the madman found and lost the touchstone.

youdao

拾起小石去碰碰那条链子，然后不看看变化与否，又把它扔掉，这已成了习惯；就是这样，这疯子找到了又失掉了那块点金石。

It had grown into a habit, to pick up pebbles and touch the chain, and to throw them away without looking to see if a change had come; thus the madman found and lost the touchstone.

youdao