Das Kapital and Mein Kampf are evidence of that in the political history of this century.

CNN: When digital culture meets print culture

Ironically, free market economies have managed to innovate fast enough to sustain the profitability of new capital investment during the 144 years since the publication of Das Kapital.

FORBES: Manage America's Economic Decline? No Thank You.

"Das (Wasted) Kapital: Firm Ownership and Investment Efficiency in China", by David Dollar and Shang-Jin Wei.

ECONOMIST: Sources and acknowledgments