Investing in the stock market is one of the best ways to build wealth over the long term. Buying a basket of high-quality FTSE 100 shares could even help you get rich and retire early. With that in mind, here are two FTSE 100 shares that may be worth buying for the long term today. 5G is here – and shares of this ‘sleeping giant’ could be a great way for you to potentially profit!According to one leading industry firm, the 5G boom could create a global industry worth US$12.3 TRILLION out of thin air…And if you click here we’ll show you something that could be key to unlocking 5G’s full potential…FTSE 100 shares on offer Hargreaves Lansdown (LSE: HL) is one of the FTSE 100’s most successful companies. Over the past few decades, the firm has grown from a small upstart into one of the biggest stockbrokers in the country. It does not look as if the company’s growth will slow down any time soon. As FTSE 100 shares go, it is a growth champion.Over the past six years, earnings per share have expanded at an average rate of 9% per annum. Customers are continuing to flock to the broker. According to its latest trading update, 94,000 new customers joined the business in the first four months of the year. Investors have been flocking to Hargreaves as the company is one of the best stockbrokers in the market. The firm has invested heavily in tech so it can provide the same service as other brokers at a much lower cost.That’s also helped the business achieve some of the highest profit margins of all FTSE 100 shares. Last year, for example, the group’s operating profit margin hit 63%!As such, it could be worth buying a share of this company for a diversified portfolio today as it continues to dominate the UK broking market. BunzlBunzl (LSE: BNZL) is one of my favourite FTSE 100 shares. Over the past few decades, the company has expanded steadily through a series of acquisitions and organic growth. Over the past six years alone, the firm has nearly doubled earnings per share. There’s plenty of scope for this to continue.Bunzl is highly cash generative, and it is adept at buying and integrating businesses. As the group continues to grow, it should generate more cash, which may help accelerate its acquisition spree. The organisation’s latest trading update also showed that the firm is coping well in the current crisis.A better-than-expected trading performance means analysts are still expecting the group’s earnings to grow by a high single-digit percentage this year. That may put Bunzl in an elite club of FTSE 100 shares that report increasing earnings in 2020. Therefore, if you’re looking for a share to help you retire early, it might be worth considering Bunzl for your portfolio.The company’s steady growth has turned Bunzl into a growth champion over the past decade. As cash continues to flow into the group’s coffers, management can continue to do what they do best. If the organisation completes more deals, investors should continue to see steady returns from this FTSE 100 champion. See all posts by Rupert Hargreaves I’m sure you’ll agree that’s quite the statement from Motley Fool Co-Founder Tom Gardner.But since our US analyst team first recommended shares in this unique tech stock back in 2016, the value has soared.What’s more, we firmly believe there’s still plenty of upside in its future. In fact, even throughout the current coronavirus crisis, its performance has been beating Wall St expectations.And right now, we’re giving you a chance to discover exactly what has got our analysts all fired up about this niche industry phenomenon, in our FREE special report, A Top US Share From The Motley Fool. Image source: Getty Images. Enter Your Email Address Rupert Hargreaves | Saturday, 18th July, 2020 | More on: BNZL HL Looking to get rich and retire early? I’d buy these 2 FTSE 100 shares today I would like to receive emails from you about product information and offers from The Fool and its business partners. Each of these emails will provide a link to unsubscribe from future emails. More information about how The Fool collects, stores, and handles personal data is available in its Privacy Statement. Our 6 ‘Best Buys Now’ Shares Click here to claim your copy now — and we’ll tell you the name of this Top US Share… free of charge! “This Stock Could Be Like Buying Amazon in 1997” Simply click below to discover how you can take advantage of this. Renowned stock-picker Mark Rogers and his analyst team at The Motley Fool UK have named 6 shares that they believe UK investors should consider buying NOW.So if you’re looking for more stock ideas to try and best position your portfolio today, then it might be a good day for you. Because we’re offering a full 33% off your first year of membership to our flagship share-tipping service, backed by our ‘no quibbles’ 30-day subscription fee refund guarantee. Rupert Hargreaves owns no share mentioned. The Motley Fool UK has recommended Hargreaves Lansdown. Views expressed on the companies mentioned in this article are those of the writer and therefore may differ from the official recommendations we make in our subscription services such as Share Advisor, Hidden Winners and Pro. Here at The Motley Fool we believe that considering a diverse range of insights makes us better investors.