1. No one can call back yesterday. Yesterday will not be called again.
2. Punctuality is the soul of business.
3. There is no royal road to science ,and only those who do not dread the fatiguing climb of gaining its numinous summits.
4. Make hay while the sun shines.
5. Let youth glitter in struggling.
6. Work today, for you know not how much you may be hindered tomorrow.
7. Procrastination is the thief of time.