Diet reform should be progressive, adapting to increasing disease in animals by replacing animal products with wholesome, inexpensive alternatives.

Original passage

The diet reform should be progressive. As disease in animals increases, the use of milk and eggs will become more and more unsafe. An effort should be made to supply their place with other things that are healthful and inexpensive. The people everywhere should be taught how to cook without milk and eggs, so far as possible, and yet have their food wholesome and palatable.