The nuns in The Sound of Music ponder, "How do you catch a cloud and pin it down?"

We found the five-step answer in the poem "To Catch a Cloud: Homage to Magritte," anthologized in Rising Tides: 20th Century American Women Poets (1973):

1. Begin with an unruffled lake
2. Wait for a cloud to pass over
3. See the cloud in the lake
4. Reach down and pinch the lake's skin between thumb and forefinger
5. Raise it as you would a silk handkerchief