1. Mendeleyev, Russian chemist

2. British writer Caroline, S.

3. R. H. Stoddard, American poet

4. norma rosen, american novelist

5. la rocheforcauld, french writer

6. j. burroughs. averican naturalist

7. w. m. thackeray. british novelist

8. samuel johnson, british writer and critic

9. you never know what you can do till you try.

10. where there is no hope, there can be no endeavor.

11. You cannot build a reputation by doing what you claim to do

12. Thomas Edison, American Inventor Where there is a will, there is a way. It turned out