The ignorant person who doesn’t think about others will be very lonely if others don’t care about him either, and his wealth or power won’t last forever if no one supports him. A selfish person can get what he wants in a certain situation, but then have no friends and no good opportunities when everyone else has left that situation behind. If you’re willing to commit to your ethics, then you’ll have many occasions during your life when those ethics become too much of a challenge for other people, and you’ll succeed as a result.