Satis eloquentiae, sapientiae parum. - Sallust

Ambition prompted many to become deceitful; to keep one thing concealed in the breast, and another ready on the tongue; to estimate friendships and enmities, not by their worth, but according to interest; and to carry rather a specious countenance than an honest heart.

Verum ubi pro labore desidia, pro continentia et aequitate libido atque superbia invasere, fortuna simul cum moribus immutatur. Ita imperium semper ad optimum quemque a minus bono transfertur. (II)

But at power or wealth, for the sake of which wars, and all kinds of strife, arise among mankind, we do not aim; we desire only our liberty, which no honorable man relinquishes but with his life.