I'm not suggesting that.
But the password managers I have used so far also require a password. Basically you need to know a least one secure password.
But the password managers I have used so far also require a password. Basically you need to know a least one secure password.
It has been told that printing your master password and putting it in your wallet is actually very safe: no online attack will reveal it, and losing the paper would not be an issue without extra information, the same way losing a physical key is not the end of the world without its address. You are doing something similar.
What you suggest is perfectly fine for one password - you are just moving the entropy from one place to the other. However, you shouldn't use it as a general method (see my other comment), and you should be aware that a determined attacker can find it by looking at your browser history.
If someone wants access to your stuff and you're carrying your master password then you may as well just not bother using a password in the first place!
I agree that Snowden should not carry his password in his wallet, but at the same time, I think that we'd see a drastic improvement in security if all regular users did precisely that (and Bruce Schneier agrees [1]). Those that think they can be targets and/or deeply care about the issue can always do it the better (but more expensive) way.
[1] https://www.schneier.com/blog/archives/2005/06/write_down_yo...
For the password manager you only need to remember one good password.