That which is most important as an object of scrutiny

That which is most important as an object of scrutiny is the mind itself. We experience happiness and sadness, we experience attachment and aversion, we experience faith and devotion, and all of these experiences are thoughts or styles of thought that arise in our mind. External objects do not produce them. Therefore, it is our minds themselves that must be scrutinized and it is the true nature of our minds that must be recognized.

--Thrangu Rinpoche