Those who cannot understand how to put their thoughts on ice should not enter into the heat of debate.
I hear and I forget. I see and I remember. I do and I understand.
When you don’t understand something, you often laugh.
To understand techniques, you must learn that they contain a lot of condensed movement.
The universe forces those who live in it to understand it.
You have to know the past to understand the present.
Don't criticize what you can't understand.
Those that know, do. Those that understand, teach.
If you would understand anything, observe its beginning and its development.
If you can't explain it simply, you don't understand it well enough.
Look deep into nature, and then you will understand everything better.