Half of these aren't even Machiavelli. Some are Plato, Thucydides etc....doesnt anyone check these?

...the incredulity of mankind, who do not truly believe in anything new until they have had actual experience of it.

With difficulty he is beaten who can estimate his own forces and those of his enemy.

Few men are brave by nature, but good discipline and experience make many so.

How we live is so different from how we ought to live that he who studies what ought to be done rather than what is done will learn the way to his downfall rather than to his preservation.

Half of these aren't even Machiavelli. Some are Plato, Thucydides etc....doesnt anyone check these?

A prince ought to have two fears, one from within, on account of his subjects, the other from without, on account of external powers.