Never let your sense of morals get in the way of doing what's right.
It pays to be obvious, especially if you have a reputation for subtlety.
No sensible decision can be made any longer without taking into account not only the world as it is, but the world as it will be. . ..
If knowledge can create problems, it is not through ignorance that we can solve them.
I don't believe in an afterlife, so I don't have to spend my whole life fearing hell, or fearing heaven even more. For whatever the tortures of hell, I think the boredom of heaven would be even worse.