Much may be done in those little shreds and patches of time, which every day produces, and which most men throw away, but which nevertheless will make at the end of it no small deduction from the life of man.
The interests of society often render it expedient not to utter the whole truth, the interests of science never: for in this field we have much more to fear from the deficiency of truth than from its abundance.
No one knows where he who invented the plow was born, nor where he died; yet he has done more for humanity than the whole race of heroes who have drenched the earth with blood and whose deeds have been handed down with a precision proportionate only to the mischief they wrought.
From its very inaction, idleness ultimately becomes the most active cause of evil; as a palsy is more to be dreaded than a fever. The Turks have a proverb which says that the devil tempts all other men, but that idle men tempt the devil.