《大学章句集注·第六章》
所说的 致知在格物 ，说的是要让自己知晓达到一种极致的程度，就必须接触事物并且彻底研究事物的道理。
所谓致知在格物者，言欲致吾之知，在即物而穷其理也。
What is called "achieving knowledge through investigating things" means that if you want to know something to an extreme level, you must come into contact with the thing and thoroughly study the principles of the thing.