It's always too early to quit.
Never complain and never explain.
Be gentle to all and stern with yourself.
Things do not happen. Things are made to happen.
If you think you can do it, you can.
Problems are not stop signs, they are guidelines.
Without hard work, nothing grows but weeds.
Either you run the day or the day runs you.
To know oneself, one should assert oneself.
Well done is better than well said.
I don't learn so good, no matter how good the teacher is.