The power of thought on reality:
We tend to think that our thoughts are meaningless and have no effect on reality. In truth however, our thoughts effect the outside world. This can be seen from the bird called the Rieh. The Rieh bird is called by this name as it has the ability to cause its female counterpart to conceive simply through gazing at her. This proves that wherever a person’s thought is found that is where the entire person is found.
 Or Torah [Maggid] Parshas Shemos 69