Life's too short to hang out with people who aren't resourceful.

As for me, to love you alone, to make you happy, to do nothing which would contradict your wishes, this is my destiny and the meaning of my life.

Always try to associate yourself closely with and learn as much as you can from those who know more than you, who do better than you, who see more clearly than you. Apart from the rewards of friendship, the association might pay off at some unforeseen time - that is only an accidental byproduct. The important thing is that the learning will make you a better person.

As a well-spent day brings happy sleep, so a life well spent brings happy death.

Associate with men of good quality if you esteem your own reputation; for it is better to be alone than in bad company.

When the foundations of social life are corroded, what ensues are battles over conflicting interests, new forms of violence and brutality, and obstacles to the growth of a genuine culture of care for the environment.