"Intelligent or not, we all make mistakes and perhaps the intelligent mistakes are the worst, because so much careful thought has gone into them"

This quote by Peter Ustinov speaks to the concept that no matter how smart we are, we all make mistakes. It recommends that the errors made by intelligent people are worse than those made by others, because they have put a lot thought and effort into their decisions. This suggests that the errors made by smart people are more costly, as they have invested more energy and time into them. It also suggests that intelligent individuals ought to be more cautious when making choices, as their mistakes may have more serious effects. Ustinov's quote is a reminder that no matter how smart we are, we all make errors and must bear in mind the choices we make.