摩訶止觀 4.123

4.123

習學者，未得無生忍，而修世智辯聰，種種分別，皆是瓦礫草木，非真寶珠。若能停住，水則澄清；下觀瑠璃，安徐取寶。能知世間生滅法相，種種行類，何物不知？以一切種智知，以佛眼見。欲行大道，不應從彼小徑中學也。

As for learning and study: before one has attained the forbearance of non-arising, cultivating worldly wisdom and eloquence with their various discriminations is entirely [gathering] tiles, rubble, grass, and trees—not the true jewel. If one can bring [the mind] to a halt, the water will become clear; looking down at the lapis lazuli, one calmly and slowly takes the jewel. One will then know the characteristics of the worldly dharmas of arising and ceasing, along with their various categories of action—what would one not know? One knows with sarvākārajñatā, and sees with the Buddha eye. Wishing to travel the great path, one should not learn from that narrow trail.