"Men live by intervals of reason under the sovereignty of humor and passion."
"When I speak of 'cycles,' I am referring to lengthy intervals of relative homogeneity, if not in the resolving of problems, than at least with respect to the consistency of their capacity to productively irritate."
"My rule of life prescribed as an absolutely sacred rite smoking cigars and also the drinking of alcohol before, after and if need be during all meals and in the intervals between them."
"A person needs at intervals to separate himself from family and companions and go to new places. He must go without his familiars in order to be open to influences, to change."