It's always too early to quit.
Do not weep do not wax indignant. Understand.
If you think you can do it, you can.
Go for it now. The future is promised to no one.
Know or listen to those who know.
If you've got a talent, protect it.
Leap, and the net will appear.
Who seeks shall find.
The wise does at once what the fool does at last.
The dog that trots about finds a bone.
There must be a positive and negative in everything in the universe in order to complete a circuit or circle, without which there would be no activity, no motion.
To enjoy enduring success we should travel a little in advance of the world.