JFK speaking on diversity, mortality, and caring for the earth; June 10, 1963 -- a few months before tragedy struck.

Found the meme here: https://anthonypeoples.wordpress.com/tag/john-f-kennedy/

I noticed it was made on ImgFlip, according to the watermark in the bottom-left corner, but I can't seem to find its original version.

Here's another version of this speech excerpt with a different design.