Silence is one of the hardest arguments to refute.
O, it is excellent to have a giant's strength; but it is tyrannous to use it like a giant.
Nothing is so good for an ignorant man as silence; and if he was sensible of this he would not be ignorant.
It is better to wear out than to rust out.
There is only one thing a philosopher can be relied upon to do, and that is to contradict other philosophers.
Nothing is more conducive to peace of mind than not having any opinions at all.
The dead might as well try to speak to the living as the old to the young.