When we conquer ourselves, then everything will be conquered: oneself, others, and all the sense objects as well, coming in by way of the eyes, ears, nose, tongue and body -- it will all get conquered like this.
Ajahn ChahMeditation is like a single log of wood. Insight and investigation are one end of the log; calm and concentration are the other end. If you lift up the whole log, both sides come up at once. Which is concentration and which is insight? Just this mind.
Ajahn Chah