31. 寂而常惺惺而常寂
31. Be clear-headed when in quiet and be quiet when clear-headed.

寂而常惺 ^① ，寂寂之境不扰；惺而常寂，惺惺之念不弛 ^② 。

① 惺：清醒。

② 不弛：使不被废弛。

寂静时要常保持清醒，这样寂静的心境才不至于受干扰。

清醒时要常保持平静，如此清醒的头脑才不至于被忽悠。

Be clear-headed when in quiet so that the quietude can be free from disturbance.

Be quiet when clear-headed so that the clear-headedness can be well preserved.

31. 寂而常惺 惺而常寂 31. Be clear-headed when in quiet and be quiet when clear-headed.