Vaishnava Devi w. Turtle Avatara OR-Goddess Yamuna with her Vahana, the Tortoise

Sumbolism unclear, this could be either of the two above, or neither.

Image of Satguru Sivaya Subramuniyaswami
In a relaxed state, happiness is found, and the qualities of the soul shine forth. Selfish, greedy people are tense, concerned, often inhibited. Tension breeds negative thinking.
—Gurudeva