Rarely has a man been more comfortable with his own greatness. He spent much of his leisure time penning long and flattering portraits of himself, declaring that there had never 'been a greater botanist or zoologist', and that his system of classification was 'the greatest achievement in the realm of science'. Modestly, he suggested that his gravestone should bear the inscription Princeps Botanicorum, 'Prince of Botanists'. It was never wise to question his generous self-assessments. Those who did so were apt to find they had weeds named after them.