What did John Locke mean when he wrote in "A Letter Concerning Toleration":

"It is neither declarations of indulgence, not acts of comprehension, such as have yet been practiced or projected amongst us, that can do the work. The first will but palliate, the second increase our evil."

Any thoughts on what he meant by "acts of comprehension"

Right now I am reading Locke's A Letter Concerning Toleration

Is there a spot for basic questions? I am no deep philosophical thinker but would like to better understand some basic concepts.