What will arrogance, prejudice and anger will do to you?

Now, if you wish to attain Buddhahood, you have only to lower the banner of your arrogance, cast aside the staff of your anger, and devote yourself exclusively to the one vehicle of the Lotus Sutra. Worldly fame and profit are mere baubles of your present existence, and arrogance and prejudice are ties that will fetter you in a next one. -Nichiren

Buddhism Day by Day
Wisdom for Modern Life by Daisaku Ikeda 23/9

What is the difference between those of superior and inferior capacity in terms of Buddhahood?

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. Conversely, when you compare yourself with persons of inferior capacity, do not be arrogant and overproud. Even persons of superior capacity may be excluded from enlightenment if they do not devote themselves wholeheartedly. -Nichiren

Wisdom for Modern Life by Daisaku Ikeda 12/8