It's always too early to quit.
Problems are not stop signs, they are guidelines.
Well done is better than well said.
Know or listen to those who know.
If you can dream it, you can do it.
If you think you can do it, you can.
By failing to prepare, you are preparing to fail.
I can, therefore I am.
The wise does at once what the fool does at last.
Quality is not an act, it is a habit.
Nobody's a natural. You work hard to get good and then work to get better. It's hard to stay on top.