Trying to meet a worthy man in the wrong way is as bad as closing the door on an invited guest

The quote was a saying by the great sage Mencius. Liu Bei used it in response to his uncouth brother Zhang Fei's suggestion to have Zhuge Liang summoned instead of going to him personally.

How I agree with it.

Trying to meet a worthy man in the wrong way is as bad as closing the door on an invited guest

This saying has many meanings, one of which states that we must always be sincere when making requests, however small, however huge. Only then, can we raise the affection and gratification of the one whom we seek.

There are many talented people in this world, but many do not have the courage to show themselves. Leaders, lords, governors, etc., must approach them persanally as only then will they have faith in themselves. Zhuge Liang liked comparing himself to Guan Zhong and Yue Yi, when in fact he surpasses the two in ability and talent. This comparison shows that he lacks the courage display his true colours.

Just before Liu Bei went to look for Zhuge Liang a third time, a poet crafted:

The worthiest have yet to bend the hero's will;
Servility could shake his fighters' confidence


The worthy refers to Zhuge Liang, the hero, Liu Bei and the fighters', Zhang Fei and Guan Yu.
To summarise, both Zhang Fei and Guan Yu were indignant at their elder brother having to throw away his pride simply to entice over a talent. Hence the phrase "Servility could shake his fighters' confidence" Liu Bei has yet to meet Kongming after two demeaning tries but is ready to go for a third one, hence "The worthiest have yet to bend the hero's will".

I believe that this is what everyone needs in this world. One simple word will say everything.

Sincerity