You keep your past by having sisters. As you get older, they're the only ones who don't get bored if you talk about your memories.
— Deborah Moggach
Restlessness Funny Sisterhood quotations
A sister can be seen as someone who is both ourselves and very much not ourselves - a special kind of double.

My sister taught me everything I really need to know, and she was only in sixth grade at the time.

Your True Nature Is Love. There's Nothing You Can Do About It.
Women marry men hoping they will change. Men marry women hoping they will not.
In thee my soul shall own combined the sister and the friend.

Help one another is part of the religion of our sisterhood.
Big sisters are the crab grass in the lawn of life.
Of two sisters one is always the watcher, one the dancer.

Bless you, my darling, and remember you are always in the heart - oh tucked so close there is no chance of escape - of your sister.
I would like more sisters, that the taking out of one, might not leave such stillness.
When sisters stand shoulder to shoulder, who stands a chance against us?

There can be no situation in life in which the conversation of my dear sister will not administer some comfort to me.
Elder sisters never can do younger ones justice!
Sisters share the scent and smells... the feel of a common childhood.

Sisters never quite forgive each other for what happened when they were five.
Sisterhood is a funny thing. It's easy to recognize, but hard to define.