The guilt of enforced crimes lies on those who impose them.
How can a thing possibly govern others when it cannot be governed itself?
Men do not care how nobly they live, but only how long, although it is within the reach of every man to live nobly, but within no man's power to live long.
It is difficult to bring people to goodness with lessons, but it is easy to do so by example.
There is more heroism in self-denial than in deeds of arms.
How many discoveries are reserved for the ages to come when our memory shall be no more, for this world of ours contains matter for investigation for all generations.