Lincoln's thoughts on why we struggle..?

So I watched a documentary a while back and learned about his depression, and they also aaid he often wrote to others suffering and explained his ideas on why he thinks we suffer.. Does anyone know if theres books or something with skmilar thoughts he wrote that we can find and read now...? 

2021-03-25T00:32:33Z

Like I don't know if what he wrote in his time abou things like depression, was ever published.. 

Pearl2021-03-25T01:49:31Z

you could see if amazon has them,they have everything

RWPossum2021-03-25T01:47:41Z

Lincoln was probably the most quotable president the US ever had. Here's a bunch of his quotes -
https://www.brainyquote.com/authors/abraham-lincoln-quotes