Date: 1760

"These first impressions are called ideas, which are lodged in this repository of the memory, in these marks, by running which over, I can raise the same ideas, when I please, which differ from their first appearance only in this, that, on their return, they come with the familiarity of a former ...

— Johnstone, Charles (c.1719-c.1800)

Date: 1797

"The impression becomes deeper; not in consequence of being reinforced by fresh arguments, but merely by dint of having longer rested in the mind; and as they [doubts] increase in force, they creep on and extend themselves. At length they diffuse themselves over the whole of Religion, and possess...

— Wilberforce, William (1759-1833)