Another man Quote by Mark Twain
“When a humorist ventures upon the grave concerns of life he must do his job better than another man or he works harm to his cause.”
“When a humorist ventures upon the grave concerns of life he must do his job better than another man or he works harm to his cause.”
![“Next came the Patent laws. These began in England in 1624; and, in this country, with the adoption of our constitution. Before then [these?], any man might instantly use what another had invented; so that the inventor had no special advantage from his own invention. The patent system changed this…” quote by Abraham Lincoln](https://sms4smile.com/quotes/img-quotes/449/abraham-lincoln-88_adoption_next-came-the-patent-laws-these-began-in_1828.jpg)
