Everyday Systems

My intention being to acquire the habitude of all these virtues, I judged it would be well not to distract my attention by attempting the whole at once, but to fix it on one of them at a time; and when I should be master of that, then to proceed to another; and so on till I should have gone through the thirteen: and as the previous acquisition of some might facilitate the acquisition of certain others, I arranged them with that view as they stand above. Temperance first, as it tends to promote that coolness and clearness of head which is so necessary where constant vigilance was to be kept up, and a guard maintained against the unremitting attraction of ancient habits and the force of perpetual temptations. p 105