After his marriage, Franklin conceived the idea of obtaining moral perfection. He was not altogether satisfied with the result, but thought his method worthy of imitation. Assuming that he possessed complete knowledge of what was right or wrong, he saw no reason why he should not always act in accordance therewith. His principle was to devote his attention to one virtue only at first for a week, at the end of which time he expected the practice of that virtue to have become a habit. He then added another virtue to his list, and devoted his attention to the same for the next week, and so on, until he had exhausted his list of virtues. He then commenced again at the beginning. As his moral code comprised thirteen virtues, it was possible to go through the complete curriculum four times in a year. Afterwards he occupied a year in going once through the list, and subsequently employed several years in one course. A little book was ruled, with a column for each day and a line for each virtue, and in this a mark was made for every failure which could be remembered on examination at the end of the day. It is easy to believe his statement: "I am surprised to find myself so much fuller of faults than I had imagined; but I had the satisfaction of seeing them diminish." "This my little book had for its motto these lines from Addison's 'Cato':-- "'Here will I hold. If there's a Power above us (And that there is, all Nature cries aloud Thro' all her work), He must delight in virtue; And that which He delights in must be happy.' "Another from Cicero:-- "'O vitae Philosophia dux! O virtutum indagatrix expultrixque vitiorum! Unus dies ex praeceptis tuis actus, peccanti immortalitati est anteponendus.' "Another from the Proverbs of Solomon, speaking of wisdom and virtue:-- "'Length of days is in her right hand; and in her left hand riches and honour. Her ways are ways of pleasantness, and all her paths are peace.' "And conceiving God to be the fountain of wisdom, I thought it right and necessary to solicit His assistance for obtaining it; to this end I formed the following little prayer, which was prefixed to my tables of examination, for daily use:-- "'O powerful Goodness! bountiful Father! merciful Guide! increase in me that wisdom which discovers my truest interest. Strengthen my resolutions to perform what that wisdom dictates. Accept my kind offices to Thy other children as the only return in my power for Thy continual favours to me.' "I used also sometimes a little prayer which I took from Thomson's Poems, viz.:-- "'Father of light and life, Thou Good Supreme! Oh teach me what is good; teach me Thyself! Save me from folly, vanity, and vice, From every low pursuit; and fill my soul With knowledge, conscious peace, and virtue pure; Sacred, substantial, never-failing bliss!'"