On July 4, 1845, Henry David Thoreau decided it was time to be alone ... a historian at the National Portrait Gallery. “What he did in the book was he took those two years of experiences ...

Aim above morality. Be not simply good — be good for something." — Henry David Thoreau Henry David Thoreau, writer, naturalist, and philosopher, was born in Concord, Massachusetts ...

Henry David Thoreau’s river journals from the 19th century are now helping scientists understanding the effects of climate change on New England's seasons. Thoreau's meticulous notes on river ...