Be our joy three-parts pain!
Strive, and hold cheap the strain;
Learn, nor account the pang;
Dare, never grudge the throe! [ Browning ]

The sickening pang of hope deferred. [ Scott ]

This life is but the passage of a day,
This life is but a pang and all is over;
But in the life to come which fades not away
Every love shall abide and every lover. [ Christina G. Rossetti ]

To be left alone in the wide world with scarcely a friend, - this makes the sadness which, striking its pang into the minds of the young and the affectionate, teaches them too soon to watch and interpret the spirit-signs of their own hearts. [ Hawthorne ]