The Good consists in the congruity of a thing with the laws of the reason and the nature of the will, and in its fitness to determine the latter to actualize the former: and it is always discursive. The Beautiful arises from the perceived harmony of an object, whether sight or sound, with the inborn and constitutive rules of the judgment and imagination: and it is always intuitive.

Perhaps, the good and the beautiful are the same, and must be investigated by one and the same process; and in like manner the base and the evil. And in the first rank we must place the beautiful, and consider it as the same with the good; from which immediately emanates intellect as beautiful. Next to this, we must consider the soul receiving its beauty from intellect, and every inferior beauty deriving its origin from the forming power of the soul, whether conversant in fair actions and offices, or sciences and arts. Lastly, bodies themselves participate of beauty from the soul, which, as something divine, and a portion of the beautiful itself, renders whatever it supervenes and subdues, beautiful as far as its natural capacity will admit. Let us, therefore, re-ascend to the good itself, which every soul desires; and in which it can alone find perfect repose. For if anyone shall become acquainted with this source of beauty he will then know what I say, and after what manner he is beautiful. Indeed, whatever is desirable is a kind of good, since to this desire tends. But they alone pursue true good, who rise to intelligible beauty, and so far only tend to good itself; as far as they lay aside the deformed vestments of matter, with which they become connected in their descent. Just as those who penetrate into the holy retreats of sacred mysteries, are first purified and then divest themselves of their garments, until someone by such a process, having dismissed everything foreign from the God, by himself alone, beholds the solitary principle of the universe, sincere, simple and pure, from which all things depend, and to whose transcendent perfections the eyes of all intelligent natures are directed, as the proper cause of being, life and intelligence. With what ardent love, with what strong desire will he who enjoys this transporting vision be inflamed while vehemently affecting to become one with this supreme beauty! For this it is ordained, that he who does not yet perceive him, yet desires him as good, but he who enjoys the vision is enraptured with his beauty, and is equally filled with admiration and delight. Hence, such a one is agitated with a salutary astonishment; is affected with the highest and truest love; derides vehement affections and inferior loves, and despises the beauty which he once approved. Such, too, is the condition of those who, on perceiving the forms of gods or daemons, no longer esteem the fairest of corporeal forms. What, then, must be the condition of that being, who beholds the beautiful itself?

Beauty is a pledge of the possible conformity between the soul and nature, and consequently a ground of faith in the supremacy of the good.

A common expression among African Americans relates the good to the beautiful, "beauty is as beauty does" or "she's beautiful because she's good." The first statement places emphasis on what a person does, that is, how a person "walks" among others in the society. The second statement identifies the beautiful by action. If a person's actions are not good, it does not matter how the person looks physically. Doing good is equivalent to being beautiful.

Our dominant story of beauty is that it is simultaneously a blessing, of genetics or gods, and a site of conversion. You can become beautiful if you accept the right prophets and their wisdoms with a side of products thrown in for good measure. Forget that these two ideas — unique blessing and earned reward — are antithetical to each other. That makes beauty all the more perfect for our (social and political) time, itself anchored in paradoxes like freedom and property, opportunity and equality.

The sensitive eye can never be able to survey, the orb of the sun, unless strongly endued with solar fire, and participating largely of the vivid ray. Everyone therefore must become divine, and of godlike beauty, before he can gaze upon a god and the beautiful itself. Thus proceeding in the right way of beauty he will first ascend into the region of intellect, contemplating every fair species, the beauty of which he will perceive to be no other than ideas themselves; for all things are beautiful by the supervening irradiations of these, because they are the offspring and essence of intellect. But that which is superior to these is no other than the fountain of good, everywhere widely diffusing around the streams of beauty, and hence in discourse called the beautiful itself because beauty is its immediate offspring. But if you accurately distinguish the intelligible objects you will call the beautiful the receptacle of ideas; but the good itself, which is superior, the fountain and principle of the beautiful; or, you may place the first beautiful and the good in the same principle, independent of the beauty which there subsists.

Religious beauty is superior to ideal beauty, since it is the ideal of the ideal.

Beauty and nature often shows up in the vicinity of sex—think of the plumage of birds or mating rituals through out the animal kingdom. “Sexual selection”—that is, evolution’s favoring of features that increase a plant’s or animal’s attractiveness and therefore it's reproductive success—is the best explanation we have for the otherwise senseless extravagance of feathers and flowers, maybe also sports cars and bikinis. In nature, at least, the expense of beauty is usually paid for by sex.
There may or may not be a correlation between the beautiful and the good, but there probably is one between beauty and health. (Which, I suppose, in Darwinian terms, is the good.) Evolutionary biologists believe that in many creatures beauty is a reliable indicator of health, and therefore a perfectly sensible way to choose one mate over another. Gorgeous plumage, lustrous hair, symmetrical features are “certificates of health,” as one scientist puts it, advertisements that a creature carries genes for resistance to parasites and is not otherwise under stress. A fabulous tail is a metabolic extravagance only the healthy can afford.

Truth is ... one approach to the attainment of the good, but in and of itself, it is neither the good nor the beautiful ... Socrates, Pascal, and others regarded knowledge of the truth with regard to purposeless objects as incongruous with the good ... [by] exposing deception, truth destroys illusion, which is the principle attribute of beauty.

Beauty is the name of something that doesn't exist

The beauty ideal. Every society has promoted a certain ideal of beauty over all others. What that ideal is is unimportant, for any ideal leaves the majority out; ideals, by definition, are modelled on rare qualities.

Beauty isn't what you see on TV or in magazine ads or even necessarily in art galleries. It's a lot deeper and a lot simpler than that. It's realizing the goodness of things, it's leaving the world a little better than it was before you got here. It's appreciating the inspiration of the world around you and trying to inspire others.

Beauty, like truth, is a thing which is relative to the time in which one lives and to the individual capable of understanding it. The expression of the beautiful bears a precise relation to the power of perception acquired by the artist.

Beauty means perfect to me, but it also has an additional meaning having to do with being pleasurable, rather than painful. Beauty is hard to make. The making is painful, and involves a certain amount of craft, and a relaxation of the part of the brain that says, "Don't write that. X wrote those four notes in 1542 or 1979 or 1825 or whatever period you are worried about being influenced by."