This was 1955, 10 years after the second world war. A lot of GI's with shell-shock and PTSD had come home and started families. Most of this reads as a pop guide to treating PTSD. Speaking in a low voice, avoiding clutter and stress is exactly the right thing to do.

Ugh. I recently went to a wedding where the Best Man read this out in its entirety as his speech (without any attribution). Lazy, in bad taste and very cringeworthy.