He who would foresee what is to happen should look to what has happened: for all that is has its counterpart in time past.
Niccolo Machiavelli(A ruler) cannot and should not keep his word when to do so would go against his interests or when the reason he pledged it no longer holds.
Niccolo MachiavelliAnd above all you ought to guard against leading an army to fight which is afraid or which is not confident of victory. For the greatest sign of an impending loss is when one does not believe one can win.
Niccolo MachiavelliIn our own days we have seen no princes accomplish great results save those who have been accounted miserly.
Niccolo Machiavelli