Philosophy expert shares the 'simple but profound rule' to tell if someone is a good or bad person
It comes down to a specific type of kindness.

Johann Wolfgang von Goethe and a scene at a restaurant.
Have you ever met somebody new and wondered if they were a good person with a mischievous streak or a bad person who can turn on the charm and behave occasionally? Determining someone’s true moral character is important, especially if you start dating them or have a business relationship. It is crucial to get to the core of who they are and know whether they can be trusted.
Popular TikTok philosopher and Substack writer Juan de Medeiros recently shared a great way to determine whether someone is good or bad. His rubric for judging someone’s moral character comes from a quote commonly attributed to Johann Wolfgang von Goethe, a German poet, playwright, novelist, and intellectual known for works like Faust and The Sorrows of Young Werther.
How can you tell if someone is a good or a bad person?
“Here's a pretty good indicator that somebody is a bad person and vice versa, how you can spot a good one. And this goes back to a simple rule, a moral aphorism by Goethe in which he writes, ‘Never trust someone who is unkind to those who can do nothing for him,’” de Medeiros shared in a TikTok video with over 45,000 views.
“Never trust someone who is unkind to those who can do nothing for him,” Johann Wolfgang von Goethe
@julianphilosophy Good vs. bad #good #bad #wisdom
De Medeiros then provided real-world ways to determine whether the person you have questions about is good or bad. “A bad person is unfriendly to strangers, to the elderly, to children, to service staff, to anybody they're not trying to impress,” he said. At the same time, the good person treats people equally, no matter what they can do for him. They’re good for goodness sake, not to get anything out of it.
“A good person carries grace within them and shares it freely with abundance. A good person treats other people as they would like to be treated as well. And it doesn't matter who you are, it doesn't matter what your status is, they will treat you and see you as their equal,” de Medeiros said.
an instant green flag was when my current bf took me to a restaurant n the waiter brought us our food but had clearly forgotten about his drink and bc he didn't want her to feel bad he went "hey sorry I forgot earlier but could I also have a glass of water with my *drink name*?"
— Redda (@fragoles) April 21, 2022
What is 'The Waiter Rule'?
Goethe’s quote echoes the common red/green flag test that many people have on dates. Sure, it's important if your date is courteous and treats you well on the date, but you really want to watch how they interact with the server. The rule is often called “The Waiter Rule,” outlined by William Swanson. Swanson, the former chairman and CEO of Raytheon Company, wrote in his book, 33 Unwritten Rules of Management, "A person who is nice to you but rude to the waiter—or to others—is not a nice person." Boxer Muhammad Ali is also known for saying something similar: "I don't trust anyone who's nice to me but rude to the waiter. Because they would treat me the same way if I were in that position."
'I don't trust anyone who's nice to me but rude to the waiter. Because they would treat me the same way if I were in that position.'
- Muhammad Ali pic.twitter.com/q1ffLjEBOJ
— The Loneliest Sport (@LoneliestSport) April 5, 2023
Rudeness toward the waitstaff also indicates that the person isn’t very smart. It’s not wise to be rude to someone who is in charge of your meal for the night.
Conversely, a good person is kind to others without looking for anything in return because they want to spread joy and believe that others deserve respect. You are what you do, not what you think or believe, and when someone treats others with goodness, it's a clear indicator of the type of person they are.
In the end, we are all a mixed bag of behaviors and attitudes, and even the most perfect of us has a devil on their shoulder telling them that it’s okay to occasionally get into a bit of mischief. However, when it comes down to determining someone's core character, how they treat those who can do nothing for them says everything.
This article originally appeared in April.
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There's a reason why some people can perfectly copy accents, and others can't
Turns out, there's a neurodivergent link.
A woman in black long sleeve shirt stands in front of mirror.
Have you ever had that friend who goes on vacation for four days to London and comes back with a full-on Queen's English posh accent? "Oooh I left my brolly in the loo," they say, and you respond, "But you're from Colorado!" Well, there are reasons they (and many of us) do that, and usually it's on a pretty subconscious level.
It's called "accent mirroring," and it's actually quite common with people who are neurodivergent, particularly those with ADHD (Attention Deficit Hyperactivity Disorder). According Neurolaunch, the self-described "Free Mental Health Library," "Accent mirroring, also known as accent adaptation or phonetic convergence, is the tendency to unconsciously adopt the accent or speech patterns of those around us. This linguistic chameleon effect is not unique to individuals with ADHD, but it appears to be more pronounced and frequent in this population."
Essentially, when people have conversations, we're constantly "scanning" for information—not just the words we're absorbing, but the inflection and tone. "When we hear an accent, our brains automatically analyze and categorize the phonetic features, prosody, and intonation patterns," writes Neurolaunch. For most, this does result in copying the accent of the person with whom we're speaking. But those with ADHD might be more sensitive to auditory cues. This, "coupled with a reduced ability to filter out or inhibit the impulse to mimic…could potentially explain the increased tendency for accent mirroring."
While the article explains further research is needed, they distinctly state that, "Accent mirroring in individuals with ADHD often manifests as an unconscious mimicry of accents in social situations. This can range from subtle shifts in pronunciation to more noticeable changes in intonation and speech rhythm. For example, a person with ADHD might find themselves unconsciously adopting a Southern drawl when conversing with someone from Texas, even if they’ve never lived in the South themselves."
People are having their say online. On the subreddit r/ADHDWomen, a thread began: "Taking on accents is an ADHD thing?" The OP shares, "My whole life, I've picked up accents. I, myself, never noticed, but everyone around me would be like, 'Why are you talking like that??' It could be after I watched a show or movie with an accent or after I've traveled somewhere with a different accent than my 'normal.'
They continue, "Apparently, I pick it up fast, but it fades out slowly. Today... I'm scrolling Instagram, I watch a reel from a comedian couple (Darcy and Jeremy. IYKYK) about how Darcy (ADHD) picks up accents everywhere they go. It's called ADHD Mirroring??? And it's another way of masking."
(The OP is referring to Darcy Michaels and his husband Jeremy Baer, who are both touring comedians based in Canada.)
Hundreds of people on the Reddit thread alone seem to relate. One comments, "Omfg I've done this my whole life; I'll even pick up on the pauses/spaces when I'm talking to someone who is ESL—but English is my first language lol."
Sometimes, it can be a real issue for those around the chameleon. "I accidentally mimicked a waitress's weird laugh one time. As soon as she was out of earshot, my family started to reprimand me, but I was already like 'oh my god I don’t know why I did that, I feel so bad.'"
Many commenters on TikTok were shocked to find out this can be a sign of ADHD. One jokes, "Omg, yes, at a store the cashier was talking to me and she was French. She's like 'Oh are you French too? No, I'm not lol. I'm very east coast Canada."
And some people just embrace it and make it work for them. "I mirror their words or phrase! I’m 30. I realized I start calling everyone sweetie cause my manager does & I work at coffee shop."
This article originally appeared in May.