It's always too early to quit.
I can, therefore I am.
Without hard work, nothing grows but weeds.
The dog that trots about finds a bone.
If you can dream it, you can do it.
Never complain and never explain.
Be gentle to all and stern with yourself.
You never know what motivates you.
Leap, and the net will appear.
What you do today can improve all your tomorrows.
Many who have had an opportunity of knowing any more about mathematics confuse it with arithmetic, and consider it an arid science. In reality, however, it is a science which requires a great amount of imagination.