It's always too early to quit.
Without hard work, nothing grows but weeds.
Never complain and never explain.
By failing to prepare, you are preparing to fail.
Problems are not stop signs, they are guidelines.
Well done is better than well said.
What you do today can improve all your tomorrows.
Know or listen to those who know.
If you think you can do it, you can.
Go for it now. The future is promised to no one.
Science is wonderfully equipped to answer the question 'How?' but it gets terribly confused when you ask the question 'Why?'