Skepticism is accepting claims only based on enough evidence to support them. It is NOT "cynicism", which is a belief that people are generally selfish and dishonest.
Years ago, in his seminal book The Demon-Haunted World, Carl Sagan presented an excellent encapsulation of skepticism/critical thinking entitled, a The Fine Art of Baloney Detection.
Daniel Dennett recently wrote an article looking at the legitimate conflict between authority and skepticism.
Below are links to my blog that has screened for this topic
Understand Reality Through Science/Skepticism
Understand Reality Through Science/Critical Thinking
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If you are an educator at any level, this link will be helpful in facilitating critical thinking, which is really what skepticism is all about:
Critical Thinking Educational Materials