Main Street and Other Poems (1917), A Blue Valentine 
Context: It seems appropriate to me to state
According to a venerable and agreeable custom,
That I love a beautiful lady.
Her eyes, Monsignore,
Are so blue that they put lovely little blue reflections
On everything that she looks at,
Such as a wall
Or the moon
Or my heart.
                                    
“Choose always the way that seems the best, however rough it may be; custom will soon render it easy and agreeable.”
As quoted in A Dictionary of Thoughts: Being a Cyclopedia of Laconic Quotations from the Best Authors of the World, both Ancient and Modern (1908) by Tyron Edwards, p. 101
Help us to complete the source, original and additional information
Pythagoras 121
ancient Greek mathematician and philosopher -585–-495 BCRelated quotes
“No right way is easy in this rough world. We must risk our lives to save them.”
                                        
                                        Terry Gifford, LLO, page 693 
1900s, Stickeen (1909)
                                    
Source: 1900s, Our National Parks (1901), chapter 1: The Wild Parks and Forest Reservations of the West
                                
                                    “Custom renders love attractive; for that which is struck by oft-repeated blows however lightly, yet after long course of time is overpowered and gives way. See you not too that drops of water falling on rocks after long course of time scoop a hole through these rocks?”
                                
                                
                                
                                
                                    
                                    Consuetudo concinnat amorem;
nam leviter quamvis quod crebro tunditur ictu,
vincitur in longo spatio tamen atque labascit.
Nonne vides etiam guttas in saxa cadentis
umoris longo in spatio pertundere saxa?
                                
                            
                                        
                                        Book IV, lines 1283–1287 (tr. Munro) 
De Rerum Natura (On the Nature of Things)
                                    
“Choose a lazy person to do a hard job. Because a lazy person will find an easy way to do it.”
                                        
                                        Sometimes quoted with "difficult" instead of "hard". 
A similar thought was expressed by automobile executive Clarence Bleicher in 1947 (before Bill Gates was born):  "if you get a tough job, one that is hard, and you haven’t got a way to make it easy, put a lazy man on it, and after 10 days he will have an easy way to do it". 
Misattributed 
Source: http://quoteinvestigator.com/2014/02/26/lazy-job/
                                    
                                        
                                        Eating Grapes Downwards 
The Note-Books of Samuel Butler (1912), Part VII - On the Making of Music, Pictures, and Books