De Sacrificiis Abelis Et Caini

being a symbol of the care which is required to be expended in arts and professions, and all other things which are matters of instruction, and that with no negligence or indifference, but it is necessary with all anxiety to have prepared one’s mind to encounter vigorously every amount of labour, and to strive not to be held in bondage by ill-considered toil, but to find advance and improvement by pushing on to the most glorious end; for labour is to be endured for the sake of improvement.