They perfect nature,and are perfected by experience: for natural abilities are like natural plants,that need proyning,by study; and studies themselves,do give forth directions too much at large,except they are bounded in by experience.

• 读书补天然之不足，经验又补读书之不足，盖天生才干犹如自然花草，读书然后知如何修剪移接；而书中所示，如不以经验范之，则又大而无当。