The admirers and followers of the Alcoran insist on the excellent moral precepts interspersed throughout that wild and absurd performance. But it is … - David Hume

The sweetest and most inoffensive path of life leads through the avenues of science and learning; and whoever can either remove any obstructions in this way, or open up any new prospect, ought so far to be esteemed a benefactor to mankind. And though these researches may appear painful and fatiguing. It is with some minds as with some bodies, which being endowed with vigorous and florid health, require severe exercise, and reap a pleasure from what, to the generality of mankind, may seem burdensome and laborious. Obscurity, indeed, is painful to the mind as well as to the eye; but to bring light from obscurity, by whatever labour, must needs be delightful and rejoicing.

[I]t must be owned, that liberty is the perfection of civil society; but still authority must be acknowledged essential to its very existence: and in those contests, which so often take place between the one and the other, the latter may, on that account, challenge the preference. Unless perhaps one may say (and it may be said with some reason) that a circumstance, which is essential to the existence of civil society, must always support itself, and needs be guarded with less jealousy, than one that contributes only to its perfection, which the indolence of men is so apt to neglect, or their ignorance to overlook.

Necessity may be defined in two ways, conformably to the two definitions of cause, of which it makes an essential part. It consists either in the constant conjunction of like objects, or in the inference of the understating from one object to another.