Being Irish, he had an abiding sense of tragedy, which sustained him through temporary periods of joy. William Butler Yeats
No problem can withstand the assault of sustained thinking. Voltaire
Perpetual devotion to what a man calls his business is only to be sustained by perpetual neglect of many other things. Robert Louis Stevenson
Regardless of how you feel inside, always try to look like a winner. Even if you are behind, a sustained look of control and confidence can give you a mental edge that results in victory. Diane Arbus
Every nation whose affairs betray a want of wisdom and stability may calculate on every loss which can be sustained from the more systematic policy of its wiser neighbors. James Madison
