Absolute beauty.

https://www.youtube.com/watch?v=HxJhYpTIrl8

Heard it first in the absolutely awe inspiring and beautiful movie, MERU.  Among many, many other things this is a stunning documentary that illustrates what it means to persevere and try again after failure, what it means to know and listen to your limits, and what true trust and love looks like.  If you knew what the human mind and body could do, think again.