Haha, you are right. The first two sentences were said by Maupassant, and the latter are the so-called insights of the quoter.

The original words are as follows:

Maupassant wrote in the novel "Life": "Life will never be as good as you imagine, but it will never be as good as you imagine. It’s so bad, you need to be strong no matter when it’s good or when it’s bad!”