When brothers agree, no fortress is so strong as their common life.
Wealth and poverty do not lie in a man's estate, but in men's souls.
The most useful piece of learning for the uses of life is to unlearn what is untrue.
I am sadly afraid that I must have done some wicked thing.
Observe your enemies, for they first find out your faults.
As iron is eaten away by rust, so the envious are consumed by their own passion.