“A beautiful object has no intrinsic quality that is good for the mind, nor an ugly object any intrinsic power to harm it. Beautiful and ugly are just projections of the mind. The ability to cause happiness or suffering is not a property of the outer object itself. For example, the sight of a particular individual can cause happiness to one person and suffering to another. It is the mind that attributes such qualities to the perceived object.”

§ IV
1910s, At the Feet of the Master (1911)
Context: See what gossip does. It begins with evil thought, and that in itself is a crime. For in everyone and in everything there is good; in everyone and in everything there is evil. Either of these we can strengthen by thinking of it, and in this way we can help or hinder evolution; we can do the will of the Logos or we can resist Him. If you think of the evil in another, you are doing at the same time three wicked things:
(1) You are filling your neighbourhood with evil thought instead of with good thought, and so you are adding to the sorrow of the world.
(2) If there is in that man the evil which you think, you are strengthening it and feeding it; and so you are making your brother worse instead of better. But generally the evil is not there, and you have only fancied it; and then your wicked thought tempts your brother to do wrong, for if he is not yet perfect you may make him that which you have thought him.
(3) You fill your own mind with evil thoughts instead of good; and so you hinder your own growth, and make yourself, for those who can see, an ugly and painful object instead of a beautiful and lovable one.
Not content with having done all this harm to himself and to his victim, the gossip tries with all his might to make other men partners in his crime. Eagerly he tells his wicked tale to them, hoping that they will believe it; and then they join with him in pouring evil thought upon the poor sufferer. And this goes on day after day, and is done not by one man but by thousands. Do you begin to see how base, how terrible a sin this is? You must avoid it altogether.

Modern Buddhism: The Path of Compassion and Wisdom (2011)

The Education of Henry Adams (1907)

Quote in a letter of Dubuffet to Arnold Glimcher, as cited by Valery Oisteanu, Jean Dubuffet: The Last Two Years http://brooklynrail.org/2012/03/artseen/jean-dubuffet-the-last-two-years. The Brooklyn Rail, March 2012.
posthumous

Freeman (1948), p. 161
Variant: The good things of life are produced by learning with hard work; the bad are reaped of their own accord, without hard work.

The Law of Mind (1892)
Context: We are accustomed to speak of ideas as reproduced, as passed from mind to mind, as similar or dissimilar to one another, and, in short, as if they were substantial things; nor can any reasonable objection be raised to such expressions. But taking the word "idea" in the sense of an event in an individual consciousness, it is clear that an idea once past is gone forever, and any supposed recurrence of it is another idea. These two ideas are not present in the same state of consciousness, and therefore cannot possibly be compared.

1980s

Part I, Essay 23: Of The Standard of Taste
Essays, Moral, Political, and Literary (1741-2; 1748)
Source: Of the Standard of Taste and Other Essays
Context: Beauty is no quality in things themselves: It exists merely in the mind which contemplates them; and each mind perceives a different beauty. One person may even perceive deformity, where another is sensible of beauty; and every individual ought to acquiesce in his own sentiment, without pretending to regulate those of others.

Source: Bluets