Light as a feather.

This 19th Dynasty Egyptian papyrus fragment shows the judgement in the afterlife of the scribe Hunefer. From left to right, he is led by Anubis to a scale where his heart is weighed. The counterweight is an ostrich feather from the headdress of Ma’at, the goddess and personification of truth and order and harmony. Hearts that are heavy with the impurities of folly, sin, and error fail the test, and are eaten by Ammit the Devourer of the Dead, the half-lion, half-crocodile goddess who sits next to the scales, waiting. Ibis-headed Thoth records the outcome. Happy Hunefer passes the test, and is presented by the sky-god Horus (depicted with the head of a falcon) to Osiris and his attendants Isis and Nephthys, where he is welcomed to immortality in the afterlife. 

Please click through for an enlarged view. 

Papyrus from The Book of the Dead of Hunefer, ca 1300 BCE, in the collections of the British Museum. This image is adapted from a digital version in the public domain via Wikipedia.

https://open.spotify.com/track/4HBMnZFquWVTATSjTABueZ?plead=please-dont-download-this-or-our-lawyers-wont-let-us-host-audio

The Chairman Dances or Foxtrot for Orchestra by John Adams, 1985. Performed by the San Francisco Symphony Orchestra, conducted by Edo de Waart. 

Source: Spotify

I think.

Case must be that one generation then should be as many living as now. To do this & to have many species in same genus (as is) requires extinction.
Thus between A & B immense gap of relation. C & B the finest gradation, B & D rather greater distinction. Thus genera would be formed. — bearing relation [continues on p. 37] to ancient types. — with several extinct forms for if each species an ancient (1) is capable of making 13 recent forms, twelve of the contemporarys [sic] must have left no offspring at all, so as to keep number of species constant.

I think.

Case must be that one generation then should be as many living as now. To do this & to have many species in same genus (as is) requires extinction.
Thus between A & B immense gap of relation. C & B the finest gradation, B & D rather greater distinction. Thus genera would be formed. — bearing relation [continues on p. 37] to ancient types. — with several extinct forms for if each species an ancient (1) is capable of making 13 recent forms, twelve of the contemporarys [sic] must have left no offspring at all, so as to keep number of species constant.