Tis not unreasonable for me to prefer the destruction of the whole world to the scratching of my finger. - David Hume

There is nothing to be learnt from a Professor, which is not to be met with in Books.

our minds can create new ideas from the components which experience has already given us, by combining together our existing ideas in new ways or by shuffling the components of our existing ideas, but we are quite unable to form any completely new ideas beyond those that have already been given to us by sensation or feeling.

That the sun will not rise to-morrow is no less intelligible a proposition, and implies no contradiction, than the affirmation, that it will rise.