I have become fascinated with the geometric form torus. It is, fundamentally, a donut...which is something I used to love and can no longer eat! But more than that, it can be seen as a depiction of a black hole, or a universe...or...or...The online dictionary defines it thusly:
mid 16th century (sense 2): from Latin, literally ‘swelling, bolster, round molding.’ The other senses date from the 19th century.
|Cushion Torus: Universe|
|Intersecting Torus 1|
|Intersecting Torus 2|