The Talmud relates that Rabbi Meir would discern a person's character from their name, and several stories are brought illustrating how names proved prophetic. This passage is frequently cited in discussions of the significance of a child's name.
וְתוּ: רַבִּי מֵאִיר וְרַבִּי יְהוּדָה וְרַבִּי יוֹסֵי הֲווֹ קָא אָזְלִי בְּאוֹרְחָא, רַבִּי מֵאִיר הֲוָה דָּיֵיק בִּשְׁמָא, רַבִּי יְהוּדָה וְרַבִּי יוֹסֵי לָא הֲווֹ דָּיְיקִי בִּשְׁמָא. כִּי מְטוֹ לְהָהוּא דּוּכְתָּא, בְּעוֹ אוּשְׁפִּיזָא. יְהַבוּ לְהוּ. אֲמַרוּ לֵיהּ: מָה שְׁמָךְ? אֲמַר לְהוּ: ״כִּידוֹר״. אֲמַר: שְׁמַע מִינַּהּ אָדָם רָשָׁע הוּא, שֶׁנֶּאֱמַר: ״כִּי דוֹר תַּהְפּוּכוֹת הֵמָּה״. רַבִּי יְהוּדָה וְרַבִּי יוֹסֵי אַשְׁלִימוּ לֵיהּ כִּיסַיְיהוּ. רַבִּי מֵאִיר לָא אַשְׁלֵים לֵיהּ כִּיסֵיהּ, אֲזַל אוֹתְבֵיהּ בֵּי קִיבְרֵיהּ דַּאֲבוּהּ. אִתְחֲזִי לֵיהּ בְּחֶלְמֵיהּ: תָּא שְׁקֵיל כִּיסָא דְּמַנַּח אַרֵישָׁא דְּהָהוּא גַּבְרָא. לִמְחַר אֲמַר לְהוּ: הָכִי אִתְחֲזִי לִי בְּחֶלְמַאי. אָמְרִי לֵיהּ: חֶלְמָא דְּבֵי שִׁמְשֵׁי לֵית בְּהוּ מַמָּשָׁא, אֲזַל רַבִּי מֵאִיר וְנַטְרֵיהּ כּוּלֵּי יוֹמָא וְאַיְּיתְיֵהּ. לִמְחַר אֲמַרוּ לֵיהּ: הַב לַן כִּיסַן. אֲמַר לְהוּ: לֹא הָיוּ דְבָרִים מֵעוֹלָם. אֲמַר לְהוּ רַבִּי מֵאִיר: אַמַּאי לָא דָּיְיקִיתוּ בִּשְׁמָא? אֲמַרוּ לֵיהּ: אַמַּאי לָא אֲמַרְתְּ לַן מָר? אֲמַר לְהוּ: אֵימַר דַּאֲמַרִי אֲנָא חֲשָׁשָׁא, אַחְזוֹקֵי מִי אֲמַרִי?
§ And furthermore, it is told: Rabbi Meir and Rabbi Yehuda and Rabbi Yosei were walking on the road together. Rabbi Meir would analyze names and discern one’s nature from his name, while Rabbi Yehuda and Rabbi Yosei were not apt to analyze names. When they came to a certain place, they looked for lodging and were given it. They said to the innkeeper: What is your name? He said to them: My name is Kidor. Rabbi Meir said to himself: Perhaps one can learn from this that he is a wicked person, as it is stated: “For they are a generation [ki dor] of upheavals” (Deuteronomy 32:20). Since it was Friday afternoon, Rabbi Yehuda and Rabbi Yosei entrusted their purses to him. Rabbi Meir did not entrust his purse to him but went and placed it at the grave of the innkeeper’s father. The innkeeper’s father appeared to the innkeeper in a dream and said to him: Go take the purse placed at the head of that man, i.e., the innkeeper’s father. The following day, he said to the Sages: This is what appeared to me in my dream. They said to him: Dreams during twilight on Shabbat evening have no substance and should not be trusted. Even so, Rabbi Meir went and guarded his money all that day and then took it. The next day, the rabbis said to the innkeeper: Give us our purses. He said to them: These matters never occurred; you never gave me any purses. Rabbi Meir said to them: Why didn’t you analyze his name to learn that he is a wicked man? They said to him: Why didn’t the Master tell us? He said to them: I said one should be suspicious, but have I said a person should be established as wicked? Could I say to you with certainty that he is wicked based on his name alone?