Answer:
This all depends on context, but in general:
Neutral: Generally having a middle ground opinion rather than being on an extreme side.
Positive: Usually refers to one's attitude, optimism. Can also mean certainty.
Negative: Not positive, could be referring to pessimism or seeing the bad side of things.
<em>Which concept does Roosevelt most likely intend to convey in this sentence? </em>
<em>The answer is, Optimism is important to success.</em>
<em>When Roosevelt reinforces the fact that this nation will endure as it has endured, he does it to tell his people that no matter how it looks today our nation will prosper, no matter how bad it appears to be, this nation has always stood up. American Manifest Destiny, though it refers to expanding his lands by providential order, also gives Americans a providential pull, a lift up, that always takes them forward. Roosevelt is aware of this, but his people has forgotten it, and he reinforces this truth to lift up the moral of the American people.</em>
Lady Macbeth: she worries her husband is too kind-natured to be able to take the crown however is determined to assist him. She calls on demonic spirits to help her.
Macbeth: he is not convinced, even though his ambitious thoughts led him to think about it previously, Lady Macbeth starts convincing him - this shows him as weak-willed.
If your growing a garden then it makes people think to eat healthier