“When you look at those of superior capacity, do not disparage yourself. The Buddha’s true intention was that no one, even those of inferior capacity, be denied enlightenment. Capacity, when you compare yourself with persons of inferior capacity, do not be arrogant and overproud. Even persons of superior capacity be excluded from enlightenment if they do not devote themselves wholeheartedly.” –Nichiren
Credit Daisaku Ikeda for the quote.