Anyone entrusted with power will abuse it if not also animated with the love of truth and virtue, no matter whether he be a prince, or one of the people.
The finest victory is to conquer one's own heart.
Every flatterer lives at the expense of him who listens to him.
Everyone has his faults which he continually repeats: neither fear nor shame can cure them.
In everything one must consider the end.
He knoweth the universe, and himself he knoweth not.