A grade-school philosophy teacher shares the most profound things kids have ever said

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As a philosophy teacher to grade-school students, Jana Mohr Lone is no stranger to getting her mind blown.

For the last 20 years or so, Mohr Lone has been the president of PLATO, a nonprofit focused on bringing philosophy to schools.

Though her students still have most of their baby teeth, Mohr Lone says a lack of life experience hardly deters them from reflecting on life's big mysteries: happiness, existence, knowledge, death.

Over the years, some quotes have really stuck with her. Here a select group she shared with Business Insider that are particularly profound.