All of the Runes have an image, or symbol, that sets the train of recollection, ideology, and meaning in motion. This image isn't the 'meaning' of the rune, it is the picture that sparks off of the meaning and gives it form and reality.

The prompt-symbol for Lagu is running water. The motto that goes with this image is 'go with the flow'; running water washes and cleanses but cannot be stood against without trouble and force. Bending to the way things are allows the roots to stay firm, and to bring the tree back upright after the flood has past. Running water also gradually changes and smooths things out of their first rough nature and, without violence, moves things along.