A university lecturer arranged to visit a master, in order that he could get an insight into Zen. He arrived at the master’s house and was graciously invited to enter the modest abode. He immediately started to talk about Zen; barely pausing for breath. The master remained silent, but gestured for the man to take tea with him. They sat down and the master started to pour tea into the lecturer’s cup. He poured and he poured some more until the cup was overflowing. “Stop, stop; the cup is overflowing”, exclaimed the flustered lecturer. “Yes it is”, replied the master, “as are you; overflowing with words. You came here to ask me about Zen, but you haven’t stopped talking since you arrived. How do you expect me to tell you about Zen if you do not stop talking?”
This is quite a thing for many people; too many words, too much lecturing, too much philosophising and not enough listening. A Zen master will not teach you anything; in fact, he/she will probably tell you that there is nothing to be taught. The job of the master is not to teach, but to give you the key to the door of your own unlearning. The unlearning of all the bad habits brought about by years of conditioning and listening to YOUR truth as told to you by others. The master will tell you that the only voice to be listened to is your own inner voice, and that the only master you have is you; your very soul.
A philosopher is someone who wants to be a master, but cannot see that it is his constant penchant for philosophising that prevents his mastery. The mind is constantly overflowing (just like the cup) with chatter (philosophy) that has to be expounded. Hence, an overflowing mind cannot be a master-mind.