For it is easy to criticize and break down the spirit of others, but to know yourself takes a lifetime.
When you say that something is impossible, you have made it impossible.
Turn your sparring into play - but always play seriously.
It's not the daily increase but daily decrease. Hack away at the unessential.
All types of knowledge, ultimately mean self knowledge.
Defeat is not defeat unless accepted as a reality-in your own mind.