What often prevents our abandoning ourselves to a single vice is, our having more than one.

There are some bad qualities which make great talents.

There are bad people who would be less dangerous if they were quite devoid of goodness.

Old people love to give good advice; it compensates them for their inability to set a bad example.

We often do shallow good in order to accomplish evil with impunity.

It is a wearisome disease to preserve health by too strict a regimen.

The measure of great men should always be measured by the means they have used to acquire it.