It depends very much what you're trying to read.
Start with the 90 day Harvard classics https://www.myharvardclassics.com/categories/20120622
And also check out Penguins Great Idea series https://www.penguin.co.uk/series/PEN02/penguin-great-ideas
If a book was read 100 years ago and is still being read today then it's worth a read. Most books written a few hundred years ago are just as relevant (if not more so) today.