说苑/孟嘗君寄客於齊王，三年而不見用，故客反謂孟嘗君曰：「君之寄臣也，三年而不見用，不知臣之罪也？

You have not been given a position for three years.

I don’t know whether this is my fault or your fault.” “I have heard,” said Mengchang Jun, “that a thread depends on a needle to find its way in; it does not rely on the needle to achieve speed in sewing.

Families rely on matchmakers to get their daughters married; they do not rely on them to make their daughters’ marriages affectionate.