What we know is to what we do not know, as a grain of sand is to the beach.
Experience is the only good 'tis safer to borrow than to buy.
Of the future, man knows least; yet, about this, he worries most.
As the sea is beautiful not only in calm but also in storm, so is happiness found not only in peace but also in strife.
However bad a man, he will have some friends: however good, he will have some enemies.
We are not men, but promises of men.