William Butler Yeats Quote

In courtesy I'd have her chiefly learned;
Hearts are not had as a gift but hearts are earned
By those that are not entirely beautiful;
Yet many, that have played the fool
For beauty's very self, has charm made wise.
And many a poor man that has roved,
Loved and thought himself beloved,
From a glad kindness cannot take his eyes.

St. 5 - Michael Robartes and the Dancer (1921) - A Prayer For My Daughter