It is of the greatest important in this world that a man should know himself, and the measure of his own strength and means; and he who knows that he has not a genius for fighting must learn how to govern by the arts of peace.
 Niccolò Machiavelli, The Prince (1532). copy citation

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Author Niccolò Machiavelli
Source The Prince
Topic strength peace
Date 1532
Language English
Reference
Note Translated by W. K. Marriott
Weblink http://www.gutenberg.org/files/1232/1232-h/1232-h.htm

Context

“And whereas I have sought to make them my enemies, because I believed that war with them would conduce to my power and glory, thou hast every inducement to make friends of them, because their alliance will bring thee advantages and security. It is of the greatest important in this world that a man should know himself, and the measure of his own strength and means; and he who knows that he has not a genius for fighting must learn how to govern by the arts of peace. And it will be well for thee to rule thy conduct by my counsel, and to learn in this way to enjoy what my life-work and dangers have gained; and in this thou wilt easily succeed when thou hast learnt to believe that what I have told thee is true.” source