Abraham Lincoln — From Log Cabin to the Presidency
Abraham Lincoln was born in 1809 in a one-room log cabin with a dirt floor in Hardin County, Kentucky. His father, Thomas Lincoln, was a subsistence farmer who barely kept the family fed. Lincoln's mother, Nancy Hanks Lincoln, died of milk sickness when he was nine.
Lincoln's total formal schooling amounted to less than one year — taught by "blab schools" where students recited lessons aloud. Everything else he learned himself. He taught himself to read using the family Bible, then read every book he could find within walking distance. He borrowed and read Blackstone's "Commentaries on the Laws of England" multiple times and taught himself law.
By sheer intellectual force and rhetorical ability, he became a successful lawyer, entered politics, and ultimately became the 16th President of the United States — presiding over the country's most existential crisis and producing some of the most celebrated writing in American history. His Gettysburg Address contains 272 words and is considered a masterwork of English rhetoric.
Michael Faraday — From Bookbinder's Apprentice to Father of Electromagnetism
Michael Faraday was born in 1791 in Newington Butts, Surrey, England, to a poor blacksmith who suffered from poor health. The family was so poor that at times each child received only one loaf of bread per week to eat. Faraday received only the most basic elementary schooling.
At 14, he was apprenticed to a bookbinder — a job that changed his life. Surrounded by books, he read voraciously, particularly works on science. A customer gave him tickets to attend lectures by the eminent chemist Humphry Davy at the Royal Institution. Faraday took meticulous notes, bound them beautifully, and sent them to Davy as a job application. Davy hired him as a laboratory assistant.
What followed was one of science's greatest ascents. Faraday, without any formal mathematical training, discovered electromagnetic induction (the principle behind every electric generator and transformer ever built), the laws of electrolysis, the relationship between light and magnetism, and the concept of the electromagnetic field. Einstein kept a portrait of Faraday on his wall alongside Newton and Maxwell.
Srinivasa Ramanujan — Mathematical Genius from South India
Srinivasa Ramanujan was born in 1887 in Erode, Tamil Nadu, India, into a poor Brahmin family. His father was a clerk in a sari shop. The family was so poor that for much of his childhood, Ramanujan was malnourished.
With minimal formal mathematical training beyond a high school textbook — G.S. Carr's "A Synopsis of Elementary Results in Pure and Applied Mathematics" — Ramanujan independently discovered, before age 25, thousands of mathematical results. Many were completely unknown to Western mathematics; many were so advanced that mathematicians are still exploring their implications today.
Hardy arranged for Ramanujan to come to Cambridge, where he produced a stream of extraordinary results before his health collapsed. He died of tuberculosis in 1920 at age 32 — one of the most tragic losses in mathematical history. Read more at Ramanujan's profile.
Thomas Edison — From Newsboy to America's Greatest Inventor
Thomas Edison grew up in modest circumstances in Port Huron, Michigan. His father was a Canadian exile who worked various jobs. Pulled from school after three months by his mother, Edison sold newspapers and candy on trains as a boy to help support the family.
At 15, he saved a stationmaster's son from being hit by a train, and the grateful father taught him telegraphy as a reward. Edison became a skilled telegrapher, working across the Midwest, teaching himself science in his spare time. He used the mechanics of the telegraph as a laboratory for understanding electrical systems.
His first major invention — the phonograph — stunned the world in 1877. His development of a practical incandescent light bulb and the electrical distribution system to power it transformed human civilization. He held 1,093 US patents — more than any other inventor in American history at the time. His rise from poverty to become the most celebrated inventor in the world remains one of the defining American stories.