"Life is mostly froth and bubble;
Two things stand like stone:
Kindness in another's trouble,
Courage in one's own."

I saw this, somewhere, a long time ago, and committed it to memory, only to forget the source. Some years later, ACTIV-L/MAP reader Tom Lee infomed me the source is:

Adam Lindsay Gordon (1833-1870),
"Ye Wearie Wayfarer," Fytte 8