Many a man creates his own lack of opportunities.--_Life_.
Who seeks, and will not take when once 'tis offer'd,
Shall never find it more.
--_Shakespeare_.
In life's small things be resolute and great
To keep thy muscles trained; know'st thou when fate
Thy measure takes? or when she'll say to thee,
"I find thee worthy, do this thing for me!"
--_Emerson_.