Ethics is doing more than the law requires and less than the law allows.
It's easier to make a good person better than to make a bad person good.
Character is just another term for "good person." A person of character lives a worthy life guided by moral principles. A person of character is a good parent, a good friend, a good employee and a good citizen.
People who don't believe in you are right only if you believe they are.
Don't ask whether it is going to be easy. Ask whether it is worth it.
Neither the intensity of your feelings nor the certainty of your convictions is any assurance that you are right.