Be careful — with quotations, you can damn anything.

Always be wary of quotes on the internet.

To be apt in quotation is a splendid and dangerous gift. Splendid, because it ornaments a man's speech with other men's jewels; dangerous, for the same reason.

In the dying world I come from, quotation is a national vice.

Poetry can be dangerous, especially beautiful poetry, because it gives the illusion of having had the experience without actually going through it.

I hate quotations. Tell me what you know.

The problem with internet quotes is that you cannot always depend on their accuracy.

The problem with quotes on the internet is that it's often difficult to verify their authenticity.

Once you've got — actually got — an idea that is whirring around so fast that no other light or contrary evidence can come in, I think it's very dangerous.

It is dangerous to be sincere unless you are also stupid.

A little sincerity is a dangerous thing, and a great deal of it is absolutely fatal.

Sometimes quotes you find on the internet are fake.

Knowledge is dangerous.

The more you ask certain questions, the more dangerous they become.