I encourage active skepticism - when people are being skeptical because they're trying to identify the best course of action. They're trying to identify the next step for themselves or other people.
“No person will make a great business who wants to do it all himself or get all the credit.”
“The human face is the organic seat of beauty. It is the register of value in development, a record of Experience, whose legitimate office is to perfect the life, a legible language to those who will study it, of the majestic mistress, the soul.”