Er Kumar

“For the whole earth is the tomb of famous men; not only are they commemorated by columns and inscriptions in their own country, but in foreign lands there dwells also an unwritten memorial of them, graven not on stone but in the hearts of men. Make them your examples, and, esteeming courage to be freedom and freedom to be happiness, do not weigh too nicely the perils of war."

[Funeral Oration of Pericles]”
― Thucydides, History of the Peloponnesian War

“In practice we always base our preparations against an enemy on the assumption that his plans are good; indeed, it is right to rest our hopes not on a belief in his blunders, but on the soundness of our provisions. Nor ought we to believe that there is much difference between man and man, but to think that the superiority lies with him who is reared in the severest school.”
― Thucydides

“The nation that will insist on drawing a broad line of demarcation between the fighting man and the thinking man is liable to find its fighting done by fools and its thinking done by cowards.”
― William Francis Butler, Charles George Gordon

“Self-control is the chief element in self-respect, and self-respect is the chief element in courage.”
― Thucydides, History of the Peloponnesian War