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Mankind have a great aversion to intellectual labor; but even supposing knowledge to be easily attainable, more people would be content to be ignorant than would take even a little trouble to acquire it.

James Boswell, Samuel Johnson (1799). “Boswell's Life of Johnson: Including Boswell's Journal of a Tour of the Hebrides, and Johnson's Diary of A Journey Into North Wales”, p.460
Mankind have a great aversion to intellectual labor; but even supposing knowledge to be easily attainable, more people would be content to be ignorant than would take even a little trouble to acquire it.