"The only thing that really matters in life is what you do for others."

"I don't know what your destiny will be, but one thing I do know: the only ones among you who will be really happy are those who have sought and found how to serve."

"The greatest challenge of the day is: how to bring about a revolution of the heart, a revolution which has to start with each one of us."

"The greatest use of life is to spend it for something that will outlast it."

"The greatest revolution of our generation is the discovery that human beings, by changing the inner attitudes of their minds, can change the outer aspects of their lives."