Wisdom Teeth; Why so Called.
The so-called wisdom teeth are the last two molars to grow, and they have no real connection with the possession of wisdom. They take their name from the time of their arrival, from twenty to twenty-five years, at which age the average person is supposed to have reached years of discretion.
Cutting one’s wisdom teeth means simply arriving at the point of completeness in physical equipment, and has no direct relation to mental equipment. The possession of these teeth is no guarantee of wisdom. They grow at about the same age in people whether they are wise or not.