What is the relationship among affection, friendship and love?

Love is the most selfish; Friendship is the most precious; Family is the most selfless.

Love, friendship, and a kinship will surely make full of green, the tree of your life, shine with a brilliance that can be read at a glance, whether in the sun or in the wind and rain.

Affection is a kind of depth, friendship is a kind of breadth and love is a kind of purity.

Affection is an unconditional and unrequited sunshine bath; Friendship is a powerful understanding bank, which can live safely at any time; And love is a mysterious boundless, which can make songs forget their feelings and make tears shine.

"It's a pity that family, friendship and love are indispensable in life; Poor is three short of two; All three are gone, and they live like dead! " After experiencing the depth of family ties, appreciating the breadth of friendship and having the purity of love, such a life can be called a veritable life.