1. Only by obeying nature can we control nature. --- Bacon (UK)

2. Anyone who takes the truth lightly in small matters is also untrustworthy in big matters. ---Einstein (USA)

3. Man's bounden duty is to have the courage to explore the truth. ---Copernicus (Poland)

4. We are enjoying the huge benefits that other people's inventions have brought to us, and we must also be willing to use our own inventions to serve others. ---Franklin (USA)

5. My philosophy of life is work. I want to reveal the mysteries of nature and benefit mankind. ---Edison (USA)

6. I have never made an accidental invention in my life. All my inventions are the result of careful consideration and rigorous testing.

---Edison (USA)