" Consider the mind-set of the anarchist who plans to sacrifice himself for a cause.
For the weeks, months, possibly years leading up to the day he straps a thermal detonator to his chest and executes his task, he has lived in and strengthened by the secret he carries, knowing the toll his act will take. So it has been for the Sith, residing in a secret, sacred place of knowledge for one thousand years, and knowing the toll our acts will take. This is power, Sidious. Where the Jedi, by contrast, are like beings who, as they move among the healthy, keep secret the fact that they are dying of a terminal illness. The true power needn’t bare claws or fangs, or announce itself with snarls and throaty barks, Sidious. It can subdue with manacles of shimmer silk, purposeful charisma and political astuteness"
-Darth Plagueis "

― James Luceno , Darth Plagueis