Can someone please explain this quote to me from Hard Times by Charles Dickens?

What's Dickens warning? I cant figure it out!

It's from part 2, chapter 8. thanks!

"Utilitarian economists, skeletons of schoolmasters, Commissioners of Fact, genteel and used-up infidels, gabblers of many little dog's-eared creeds, the poor you will have always with you. Cultivate in them, while there is yet time, the utmost graces of the fancies and affections, to adorn their lives so much in need of ornament; or, in the day of your triumph, when romance is utterly driven out of their souls, and they and a bare existence stand face to face, Reality will take a wolfish turn, and make an end of you."

Can someone please explain this quote to me from Hard Times by Charles Dickens?software

uhhhhhh ohhh humm doesnt it mean that life goes bye fast and you wont find the perfect love?lol just shooting out ideas here