Complex sentence: Abraham Lincoln and Charles Darwin were born on the same day, February 12,1809; both lost their mother at a young age; and despite their differences in upbringing both men saw themselves as autodidacts.
Split into simpler sentences: Abraham Lincoln and Charles Darwin were born on the same day, February 12,1809. Both lost their mother at a young age and, despite their differences in upbringing, both men saw themselves as autodidacts.