[spinchange]

Don't most password managers have a feature that enables you to locally generate a random, high-entropy password? If you're using a manager in the first place you don't really need to remember it, right?

Also, I've always wondered if it was better, worse, or of no consequence to leave spaces in a passpharse.

[ChikkaChiChi]

It can't hurt.

While a space is considered another character, I've come across more than a few instances in which blank characters are scrubbed from user input fields.

So even if you add one, it's entirely possible that it's ignored.

[cheepin]

Yes. I use LastPass, and everywhere possible, I have 20-100 character passwords with uppercase/lowercase/numbers/symbols. They can be generated by the software very conveniently.

[DanBC]

You need to remember the passphrase that unlocks tour password manager.