When I come upon anything-in Logic or in any other hard subject-that entirely puzzles me, I find it a capital plan to talk it over, aloud, even when I am all alone. One can explain things so clearly to one's self! And then, you know, one is so patient with one's self: one never gets irritated at one's own stupidity!
Lewis CarrollO Oysters,' said the Carpenter, You've had a pleasant run! Shall we be trotting home again?' But answer came there none - And this was scarcely odd, because They'd eaten every one.
Lewis Carroll