Quotation from: The Chessmen of Mars

Written by: Edgar Rice Burroughs

"No, Tara of Helium," he replied. "They were scarce worth the
effort of my blade, and never were they a menace to me because of
their swords."

"They should have slain you easily," said Ghek. "So great and
highly developed is the power of reason among us that they should
have known before you struck just where, logically, you must seek
to strike, and so they should have been able to parry your every
thrust and easily find an opening to your heart."