“If you come across any special trait of meanness or stupidity… you must be careful not to let it annoy or distress you, but to look upon it merely as an addition to your knowledge—a new fact to be considered in studying the character of humanity. Your attitude towards it will be that of the mineralogist who stumbles upon a very characteristic specimen of a mineral.”
Arthur Schopenhauer, via The Daily Laws (Page 368)
“To the ancient Greeks, far more harm is caused in this world by stupidity and incompetence than outright evil. Those who are overtly evil can be combated, because they are easy to recognize and fight against. The incompetent and stupid are far more dangerous because we are never quite sure where they are leading us, until it is too late. The greatest military disasters in history have more often than not originated from leaders who lack strategic wisdom.”
Robert Greene, The Daily Laws (Page 306)
“Socrates thought that stupidity was incompatible with wisdom, but he never said that ignorance was stupidity.”
Xenophon, via A Calendar of Wisdom (Page 203)