The bright and good moments of our life ought to teach us how to act aright when we are melancholy and dull and stupid, by preserving the memory of their results; and the melancholy, dull, and stupid moments should teach us to be modest when we are bright. For we generally value ourselves according to our best and brightest moments; and those in which we are weak and dull and miserable, we regard as no proper part of us. To remember them will teach us to be modest, humble, and tolerant.

Mark my words once for all, my dear friend, and be clever. Men are entirely self-centred, and incapable of looking at things objectively. If you had a dog and wanted to make him fond of you, and fancied that of your hundred rare and excellent characteristics the mongrel would be sure to perceive one, and that that would be sufficient to make him devoted to you body and soul--if, I say, you fancied that, you would be a fool. Pat him, give him something to eat; and for the rest, be what you please: he will not in the least care, but will be your faithful and devoted dog. Now, believe me, it is just the same with men--exactly the same. As Goethe says, man or dog, it is a miserable wretch:

The Essays of Arthur Schopenhauer; The Art of Controversy — Part 45

_Denn ein erbärmlicher Schuft, so wie der Mensch, ist der hund_.

The Essays of Arthur Schopenhauer; The Art of Controversy — Part 45

If you ask why these contemptible fellows are so lucky, it is just because, in themselves and for themselves and to themselves, they are nothing at all. The value which they possess is merely comparative; they exist only for others; they are never more than means; they are never an end and object in themselves; they are mere bait, set to catch others.[1] I do not admit that this rule is susceptible of any exception, that is to say, complete exceptions. There are, it is true, men--though they are sufficiently rare--who enjoy some subjective moments; nay, there are perhaps some who for every hundred subjective moments enjoy a few that are objective; but a higher state of perfection scarcely ever occurs. But do not take yourself for an exception: examine your love, your friendship, and consider if your objective judgments are not mostly subjective judgments in disguise; consider if you duly recognise the good qualities of a man who is not fond of you. Then be tolerant: confound it! it's your duty. As you are all so self-centred, recognise your own weakness. You know that you cannot like a man who does not show himself friendly to you; you know that he cannot do so for any length of time unless he likes you, and that he cannot like you unless you show that you are friendly to him; then do it: your false friendliness will gradually become a true one. Your own weakness and subjectivity must have some illusion.

The Essays of Arthur Schopenhauer; The Art of Controversy — Part 45