Tirukkural 786: True Friendship

The love that dwells (merely in the smiles of the face is not friendship; (but) that which dwells deep in the smiles of the heart is true friendship.

Image of Satguru Sivaya Subramuniyaswami
You must purify yourself. You purify yourself by being kind to others, being generous until it hurts, being benevolent, being ready to serve at all times until you are strained in serving. Put a smile on the faces of other people.
—Gurudeva