What Does It Mean To Be An Empty Cup

You must have a clear, hearty and open mind to receive Systema. You must be an empty cup.

Noble sounding words, but what does it mean to have an empty cup?

You have to be able to let go of everything you know about Systema if you wish to learn from a great teacher. How can a student learn form a teacher when the student already believes they know the lesson? In the beginning its normal to cling to 'what you know', but Systema is changing. It moves, it transforms itself, it's evolving constantly.

"You have to be careful. Often what you see with your own logic is different from reality"