The whole lesson of my life has been that no ‘methods of stimulation’ are of any lasting use. They are indeed like drugs — a stronger dose is needed each time and soon no possible dose is effective. We must not bother about thrills at all. Do the present duty — bear the present pain — enjoy the present pleasure — and leave emotions and ‘experiences’ to look after themselves.

C. S. Lewis (1898-1963) English writer, literary scholar, lay theologian [Clive Staples Lewis]
Letter to Mrs. Ray Garrett (12 Sep 1960)