In Ripples in the Fabric of the Universe, Jim Tilley draws on his experience as a poet and mathematician to fix a lens on the current raw state of the country and the world and on interpersonal relationships. At times, his mood is merely contemplative, especially while expressing his fondness for nostalgia and in his testaments to family and friends, but as he delves relentlessly into matters political, ecological, and environmental, that mood turns darker, even ominous, infused occasionally with humor to present a more optimistic outlook.