And where is the Prince who can afford to so cover his country with troops for its defense, as that ten thousand men descending from the clouds, might not in many places do an infinite deal of mischief, before a force could be brought together to repel them?

The man who does things makes mistakes, but he doesn't make the biggest mistake of all-doing nothing.

When you're finished changing, you're finished.

And we daily in our experiments electrise bodies plus or minus, as we think proper. [These terms we may use till your Philosophers give us better.] To electrise plus or minus, no more needs to be known than this, that the parts of the Tube or Sphere, that are rubb'd, do, in the Instant of Friction, attract the Electrical Fire, and therefore take it from the Thin rubbing; the same parts immediately, as the Friction upon them ceases, are disposed to give the fire they have received, to any Body that has less.

This [the U.S. Constitution] is likely to be administered for a course of years and then end in despotism... when the people shall become so corrupted as to need despotic government, being incapable of any other.

If better is possible, good is not enough

Love your Enemies, for they tell you your Faults.