Karma is not something complicated or philosophical. Karma means watching your body, watching your mouth, and watching your mind. Trying to keep these three doors as pure as possible is the practice of karma.
Thubten YesheAt certain times, a silent mind is very important, but 'silent' does not mean closed. The silent mind is an alert, awakened mind; a mind seeking the nature of reality.
Thubten Yeshe