This remark is true in all the enterprises and transactions of life the world over.
— from Thoughts on Missions by Sheldon Dibble

The reason is that in all these employments, and in fact in most of the employments of life, there is so much to diversify, so many little incidents constantly occurring to animate and relieve, and so much bodily exercise, which alternates with, and suspends the fatigues of the mind, that the labors may be much longer continued, and with less cessation, and yet the health not suffer.
— from The Teacher Or, Moral Influences Employed in the Instruction and Government of the Young by Jacob Abbott

Yet they would not have turned back the tide of European affairs and given one more victory to reaction had they not had their allies in the hatred of race to race, in the incapacity and the errors of peoples and those who represented them; above all, in the enormous difficulties which, even had the generation been one of sages and martyrs, the political circumstances of the time would in themselves have opposed to the accomplishment of the ends desired.
— from A History of Modern Europe, 1792-1878 by Charles Alan Fyffe

The reason is, that in all these employments, and, in fact, in most of the employments of life, there is so much to diversify, so many little incidents constantly occurring to animate and relieve, and so much bodily exercise, which alternates with and suspends the fatigues of the mind, that the labors may be much longer continued, and with less cessation, and yet the health not suffer.
— from The Teacher Moral Influences Employed in the Instruction and Government of the Young by Jacob Abbott