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Before formally launching the food-replacement product, he used his own body to experiment with the recipe. He tinkered with different doses and types of nutrients, sometimes hurting himself in the process.
But Rhinehart truly believes in hacking food to make something affordable, easy, and sustainable. He's on a quest to perfect Soylent.
Rhinehart's focus is part of what has drawn users and venture capitalists to Soylent, and why it continues to find success.
But Rhinehart's views aren't always welcome, and his firm stances on issues of food philosophy can be polarizing.
Here are 31 quotes from Rhinehart that show his view of the world and the future. If you are on his side, they are inspiring and logical. If you are not, they may sound wacky.