Knowledge without wisdom is double folly.

When desire dies, fear is born.

Always leave something to wish for; otherwise you will be miserable from your very happiness.

It is better to have too much courtesy than too little, provided you are not equally courteous to all, for that would be injustice.

There are rules to luck, not everything is chance for the wise; luck can be helped by skill.

Don't take the wrong side of an argument just because your opponent has taken the right side.

Do not commit yourself to anybody or anything, for that is to be a slave, a slave to every man Above all, keep yourself free of commitments and obligations - they are the device of another to get you into his power