Can you check these sentences for me please?

1) Man cannot be sure of what will happen after death and has no proof that human suffering stops (?) or will stop at that point
2) The medieval perspective in which Hamlet sees death as physical liberation from the prison of the body is countered (can you tell me an appropriate synonym??) by the doubt of the Renaissance man, concerning (???) the after life.
3) The fear of something after life prevents us from committing suicide (is from correct or is the gerund alone correct)
4) If it is cowardly (?) to remain alive, then conscience makes cowards of us all.
5) Hamlet regards cowardice as (?) the ability to stay alive
6) Hamlet didn't resent being insulted because he had no gall in his liver (he calls himself pigeon-livered???)
7) He adresses himself (??) muddy-mettled rascal (how would you explain this??? a rascal whose mettle is made of mud??)
8) Hamlet is urged by the ghost to avenge (or to take revenge, get revenge on Claudius for murdering .. Are these examples correct?) his father's murder. Can you also say to revenge himself for his father's murder?
9) Do you know a good synonym for to be reluctant to??
Thanks for the help

1. "stops" is fine

2. Suggestion: ... prison of the body, contradicted by the doubt of the Renaissance man about a possible afterlife.

3. I think you mean "after death" rather than "after life" -- and yes, keep the word "from" in there.

4. Fine, as is.

5. Fine, as is.

6. Fine, as is; or ~~> ... because he was not rancorous.
(See http://thesaurus.reference.com/browse/gall )

7. He addresses himself as a dull spirited person.
(See http://www.answers.com/topic/muddy-mettled )

8. All the different phrasings you've written are correct. "... to avenge his father's murder" is the most direct and concise.
http://www.answers.com/topic/avenge

9. http://www.answers.com/topic/reluctant and http://thesaurus.reference.com/browse/reluctant

Sure, I can check these sentences for you. Here are the corrections and explanations:

1) Man cannot be sure of what will happen after death and has no proof that human suffering stops or will stop at that point.
- This sentence is grammatically correct. It expresses the uncertainty surrounding what happens after death and the lack of evidence regarding the cessation of human suffering.

2) The medieval perspective in which Hamlet sees death as physical liberation from the prison of the body is contradicted by the doubt of the Renaissance man concerning the afterlife.
- The word "countered" can be replaced with "contradicted" to convey the conflicting views. "Concerning" can be used to show the doubt a Renaissance man has regarding the afterlife.

3) The fear of something after life prevents us from committing suicide.
- The preposition "from" is correct here, indicating the cause of preventing suicide. "Prevents us from committing suicide" is an appropriate construction.

4) If it is cowardly to remain alive, then conscience makes cowards of us all.
- This sentence is grammatically correct. The word "cowardly" is appropriate as it complements the sentence structure.

5) Hamlet regards cowardice as the ability to stay alive.
- The word "regards" is appropriate to convey Hamlet's perspective. "The ability to stay alive" accurately describes his view on cowardice.

6) Hamlet didn't resent being insulted because he had no gall in his liver (he calls himself pigeon-livered).
- The phrase "he calls himself pigeon-livered" is a figurative expression used by Hamlet to explain why he doesn't feel offended. It refers to a lack of courage or cowardice rather than the specific presence of "gall in his liver."

7) He addresses himself as a muddy-mettled rascal.
- The phrase "muddy-mettled" is a figurative expression used by Hamlet to describe himself. It implies being weak-willed or lacking determination.

8) Hamlet is urged by the ghost to avenge his father's murder. It can also be said as "to take revenge" or "get revenge" on Claudius for murdering his father. "To revenge himself for his father's murder" is grammatically correct, but the more common phrasing is "to avenge his father's murder."

9) Do you know a good synonym for "to be reluctant to"?
- A good synonym for "to be reluctant to" is "hesitate," "be unwilling," "have reservations," or "be disinclined." These words convey a similar meaning of not being eager or enthusiastic about doing something.