Dull minds are never either intuitive or mathematical
The most pathetic person in the world is someone who has sight but no vision.
It is the mark of an educated mind to be able to entertain a thought without accepting it
The worst sin is that which the sinner takes lightly
O man you are busy working for the world, and the world is busy trying to turn you out
Therefore, it is necessary to be a fox to discover the snares and a lion to terrify the wolves
