Feeble mortals! led astray by error, how long will ye permit your imagination, so active, so prompt to seize on the marvellous, to continue to seek out of the universe pretexts to render you baneful to yourselves, injurious to the beings with whom ye live in society? Wherefore do ye not follow in peace, the simple, easy route marked out for ye by nature? To what purpose do ye scatter thorns on the road of life? What avails it, that ye multiply those sorrows to which your destiny exposes ye? What advantages can ye derive from systems with which the united efforts of the whole human species have not been competent to bring ye acquainted? Be content, then, to remain ignorant of that, which the human mind is not formed to comprehend; which human intellect is not adequate to embrace: occupy yourselves with truth; learn the invaluable art of living happy; perfection your morals; give rationality to your governments; simplify your laws, and rest them on the pillars of justice; watch over education, and see that it is of an invigorating quality; give attention to agriculture, and encourage beneficial improvements; foster those sciences which are actually useful, and place their professors in the most honorable stations; labor with ardour, and munificently reward those whose assiduity promotes the general welfare; oblige nature by your industry to open her immense stores, to become propitious to your exertions; do these things, and the gods will oppose nothing to your felicity. Leave to idle thinkers, to soporific dreamers, to waking visionaries, to useless enthusiasts, the unproductive task, the unfruitful occupation, of fathoming depths, from which ye ought sedulously to divert your attention; enjoy with moderation, the benefits attached to your present existence; augment their number when reason sanctions the multiplication; but never attempt to spring yourselves forward, beyond the sphere destined for your action. If you must have chimeras, permit your fellow creatures to have theirs also; but never cut the throats of your brethren, when, they cannot rave in your own manner. If ye will have unintelligible systems, if ye cannot be contented without marvellous doctrines, if the infirmities of your nature require an invisible crutch, adopt such as may best suit with your humour; select those which you may think most calculated to support your tottering frame; if ye can, let your own imagination give birth to them; but do not insist on your neighbours making the same choice with yourself: do not suffer these imaginary theories to infuriate your mind: let them not so far intoxicate your understandings, as to make ye mistake the duties ye owe to the real beings with whom ye are associated. Always remember, that amongst these duties, the foremost, the most consequential, the most immediate in its bearing upon the felicity of the human race, stands, _a reasonable indulgence for the foibles of others_. CHAP. XI.