Do not measure your loss by itself; if you do, it will seem intolerable; but if you will take all human affairs into account you will find that some comfort is to be derived from them.
Strive to attain to the greater virtues, but do not neglect the lesser ones. Do not make light of a fall even if it be the most venial of faults; rather, be quick to repair it by repentance, although many others may commit a large number of faults, slight and grievous, and remain unrepentant.
Does not the gratitude of the dog put to shame any man who is ungrateful to his benefactors?
Do not despise the fish because they are absolutely unable to speak or to reason, but fear lest you may be even more unreasonable than they by resisting the command of the Creator. Listen to the fish, who through their actions all but utter this word: 'We set out on this long journey for the perpetuation of our species.'
Isambard K. Brunel
Francisco de Quevedo