According to the philosopher Bryan Magee, "it is doubtful whether any human being has ever known as much as he did".
Σύμφωνα με τον φιλόσοφο Μπράιαν Μαγκί (Bryan Magee), "είναι αμφίβολο αν κάποιο ανθρώπινο ον γνώριζε τόσα πολλά όσα αυτός".