"And if you found the potential to grow things and feed people a thrill ..." The sentence breaks down as: ... the potential to grow things and feed people... (that is growing plants/vegetables that people can eat) a thrill... something exciting So, it's about finding it exciting and enjoyableto grow plants that people can eat. I hope this helps, Richard

In order to understand it, you need to look at the clause as a whole: "if you find (something) a thrill, (then) you may/will find (something else) (adjective)". So to rephrase the clause: "If you (generally) find feeding people a thrill (If you normally like feeding people), then you will find it even more precious now" The phrase "feed (someone)" is not as common as you might think. You can "feed a baby" or "feed (give food to) the dog", for example, but it sounds really strange to "feed your friend dinner"--it means literally that you held the spoon to your friend's mouth. When we say "feed people", it's kind of a special meaning that conveys the sense of "cooking for people". A chef who says he enjoys feeding people means that he likes cooking for people.