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Use "principles" in a sentence
"That, as precedents for the construction of a successful flying machine, the investigation of some species of birds as a base of the principles of all is correct only in connection with the species and habits of the bird; that the _general mechanical principles_ of flight applicable to the _operation_ of the _same unit_ of wing in _all_ species are alone applicable to the flying machine."
"Thus from universal and necessary ideas we rise to the _absolute Idea_, from immutable principles to a _First Principle of all principles_, a _First Thought_ of all thoughts -- that is, to _God_."
"But sticking up for your principles is only admirable if your principles are admirable."