How do you say these 2 japanese kotowaza?
Proof rather than argument. ~Japanese Proverb

If you believe everything you read, better not to read. ~Japanese Proverb

I really like these proverbs/kotowaza, so I was wondering how you say them in Japanese.

Question

How do you say these 2 japanese kotowaza?
Proof rather than argument. ~Japanese Proverb
 
If you believe everything you read, better not to read. ~Japanese Proverb

I really like these proverbs/kotowaza, so I was wondering how you say them in Japanese.

Answer

"Proof rather than argument"
論(ron)より証拠(shouko)

"If you believe everything you read, better not to read."
Is it really a Japanese proverb? I've never heard of it. Sorry. Wait other people's answers.

Answer

尽く書を信ずれば即ち書なきに如かず 
(Kotogotoku sho wo shinzureba sunawachi sho naki ni shikazu)

It's a classic Chinese quote from Mencius（孟子　Moushi）, rather than Japanese proverb. The credit should go to ancient China.
http://baike.baidu.com/view/3536804.htm