Add punctuation: 15 A simple man believes everythingbut the prudent man carefully considers his ways
A: 15 A simple man believes everything,but the prudent man carefully considers his ways.

Add punctuation: The difference between a mere impulse and a real intuition may often be detected in two ways first by waiting a few days as the subconscious mind has then a chance to offer help in deciding the matter second by noting the kind of emotion which accompanies the message
A: ... The difference between a mere impulse and a real intuition may often be detected in two ways: first, by waiting a few days, as the subconscious mind has then a chance to offer help in deciding the matter; second, by noting the kind of emotion which accompanies the message.

Add punctuation: In the museums vestibule there is a caf area with a coffee machine
A:
In the museum's vestibule there is a cafe area with a coffee machine.