If by the age of forty a man is still disliked there is no hope for him.

[年四十而見惡焉、其終也已。]

Confucius (c. 551- c. 479 BC) Chinese philosopher, sage, politician [孔夫子 (Kǒng Fūzǐ, K'ung Fu-tzu, K'ung Fu Tse), 孔子 (Kǒngzǐ, Chungni), 孔丘 (Kǒng Qiū, K'ung Ch'iu)]

The Analects [論語, 论语, Lúnyǔ], Book 17, verse 26 (17.26) (6th C. BC – AD 3rd C.) [tr. Lau (1979)]
    (Source)

(Source (Chinese)). Alternate translations:

When a man at forty is the object of dislike, he will always continue what he is.
[tr. Legge (1861)]

When a man meets with odium at forty, he will do so to the end.
[tr. Jennings (1895)]

If a man after forty is an object of dislike to men, he will continue to be so to the end of his days.
[tr. Ku Hung-Ming (1898)]

If a man reach forty and yet be disliked by his fellows, he will be so to the end.
[tr. Soothill (1910)]

Forty and disliked. He is at the end already; too late to alter.
[tr. Soothill (1910) - alternate 1]

At 40 a man's character is settled, and if he still be detested by his fellows, then here his end is reached.
[tr. Soothill (1910) - alternate 2]

If a man is hateful at forty he'll be so to the end.
[tr. Pound (1933)]

One who has reached the age of forty and is still disliked will be so till the end.
[tr. Waley (1938)]

It is all over for the man of forty who is held in aversion.
[tr. Ware (1950), 17.24]

If hateful things are seen in one at the age of forty, that is indeed how one will end up.
[tr. Dawson (1993)]

Whoever, by the age of forty, is still disliked, will remain so till the end.
[tr. Leys (1997)]

If, at forty, a man is still loathed, he is done for.
[tr. Huang (1997), 17.25]

If one is still disliked at his forty years of age, one is going to the end.
[tr. Cai/Yu (1998), No. 466]

The person who at age forty still evokes the dislike of others is a hopeless case.
[tr. Ames/Rosemont (1998)]

If he is forty and is still hated, he will probably be so until the end.
[tr. Brooks/Brooks (1998), 17.24]

If you reach forty and find it all hateful, you'll be that way to the death.
[tr. Hinton (1998), 17.25]

If, having reached the age of forty, you still find yourself despised by others, you will remain despised until the end of your days.
[tr. Slingerland (2003)]

Forty and hated by others -- and he’ll be so the rest of his life.
[tr. Watson (2007)]

If a person has reached forty but is still an outcast, he will not have much hope for the rest of his life.
[tr. Li (2020)]