One thing I know: the only ones among you who will be really happy are those who will have sought and found how to serve.
Albert Schweitzer

Caring about others, running the risk of feeling, and leaving an impact on people, brings happiness.
Rabbi Harold Kushner

One of the things I keep learning is that the secret of being happy is doing things for other people.
Dick Gregory

Make one person happy each day and in forty years you will have made 14,600 human beings happy for a little time, at least.
Charley Willey

What we have done for ourselves alone dies with us. What we have done for others and the world remains and is immortal.
Albert Pine

In my opinion, he only may be truly said to live and enjoy his being who is engaged in some laudable pursuit, and acquires a name by some illustrious action, or useful art.
Sallust

No man can become rich without himself enriching others.
Andrew Carnegie

You give but little when you give of your possessions. It is when you give of yourself that you truly give.
Kahlil Gibran

Whatever there is of God and goodness in the universe, it must work itself out and express itself through us. We cannot stand aside and let God do it.
Albert Einstein

Be the change you want to see in the world.
Gandhi