Kahlil Gibran, 1913

Love one another, but make not a bond of love:

Let it rather be a moving sea between the shores of your souls.

Fill each other's cup but drink not from one cup.

Give one another of your bread but eat not from the same loaf

Sing and dance together and be joyous, but let each one of you be alone,

Even as the strings of a lute are alone though they quiver with the same music.

Give your hearts, but not into each other's keeping.

For only the hand of Life can contain your hearts.

And stand together yet not too near together:

For the pillars of the temple stand apart,

And the oak tree and the cypress grow not in each other's shadow.

His wise words about children ring true to me as well. He tells us they have their own journey to travel and it is not ours to control. Easy to say when you don’t have any kids but, as an Auntie to many of my sibs offspring, this is an important lesson.

Your children are not your children.
 They are the sons and daughters of Life's longing for itself.
 They come through you but not from you,
 And though they are with you yet they belong not to you. 

You may give them your love but not your thoughts, 
For they have their own thoughts.
 You may house their bodies but not their souls, 
For their souls dwell in the house of tomorrow, 
which you cannot visit, not even in your dreams.
 You may strive to be like them, 
but seek not to make them like you.
 For life goes not backward nor tarries with yesterday. 

You are the bows from which your children
as living arrows are sent forth.
 The archer sees the mark upon the path of the infinite, 
and He bends you with His might 
that His arrows may go swift and far.
 Let your bending in the archer's hand be for gladness; 
For even as He loves the arrow that flies, 
so He loves also the bow that is stable.

The obvious is that which is never seen until someone expresses it simply.