It's always too early to quit.

Without hard work, nothing grows but weeds.

Things do not happen. Things are made to happen.

I can, therefore I am.

Either you run the day or the day runs you.

Know or listen to those who know.

Be thine own palace, or the world's thy jail.

If you think you can do it, you can.

Begin to be now what you will be hereafter.