Prefers an entirely undisturbed and unclouded brain for mental work, unstimulated by anything stronger than tea or coffee, unaffected by tobacco or other drags. His faculties are best under his control in the forenoon, between breakfast and lunch. The only intellectual use he could find in stimulants is the quickened mental action they induce when taken in company. He thinks ideas may reach the brain when slightly stimulated, which remain after the stimulus has ceased to disturb its rhythms. He does not habitually use any drink stronger than water. He has no peremptory rule, having no temptation to indulgence, but approaching near to abstinence as he grows older. He does not believe that any stimulus is of advantage to a healthy student, unless now and then socially, in the intervals of mental labour.