Know or listen to those who know.
You never know what motivates you.
If you think you can do it, you can.
I can, therefore I am.
If you can dream it, you can do it.
Always desire to learn something useful.
It's always too early to quit.
Leap, and the net will appear.
Only the educated are free.
Who seeks shall find.
Without feeling abashed by my ignorance, I confess that I am absolutely unable to say. In the absence of an appearance of learning, my answer has at least one merit, that of perfect sincerity.