When we feel happy and peaceful, our happiness and peace radiates around us, and others can enjoy it as well. This is called 'the enjoyment of others of our body of bliss'.
There's little of the melancholy element in her, my lord: she is never sad but when she sleeps; and not ever sad then; for I have heard my daughter say, she hath often dreamt of unhappiness, and waked herself with laughing.
Happiness is a thing honored and perfect. This seems to be borne out by the fact that it is a first principle or starting-point, since all other things that all men do are done for its sake; and that which is the first principle and cause of things good we agree to be something honorable and divine.
O happiness! our being's end and aim!
Good, pleasure, ease, content! whate'er thy name:
That something still which prompts the eternal sigh,
For which we bear to live, or dare to die.