You never know what motivates you.
It's always too early to quit.
Be gentle to all and stern with yourself.
The wise does at once what the fool does at last.
Problems are not stop signs, they are guidelines.
Always desire to learn something useful.
To know oneself, one should assert oneself.
If you're going through hell, keep going.
Be kind whenever possible. It is always possible.
Quality is not an act, it is a habit.
The only time some people work like a horse is when the boss rides them.