There are 3 cups on the table.
One of it is placed upside-down,the next one has a hole on the bottom,the other one with something dirty inside
All 3 cups can't be filled with clean water.
The first one is placed upside-down,water can't go in at all.
The second one with a hole on the bottom,the water just leaks.
the third one with something dirty inside that it will mix with the water and hence you can't drink it.
Just like the cups,if you refuse to accept anything,you will get nothing and learn nothing.
If you hear without listening,you may know something,but not be able to fully understand and make use of them.
If you are biased,you won't get to know the true nature of things.
Which cup represents you?