Hivemind has feelings

• Devastation of Baal:

"The Imperial scholars were wrong. The hive mind knew. The hive mind thought, it felt, it hated, and it desired. Its emotions were unutterably alien, cocktails of feeling not even the subtle aeldari might decipher. Its emotions were oceans to the puddles of a man’s feelings. They were inconceivable to humanity, for they were too big to perceive.

The hive mind looked out of its innumerable eyes towards the dull red star of Baal. It apprehended that this was the hive of the warriors that had hurt it so grievously, who had burned its feeding grounds and scattered its fleets. It hated the red prey, and it coveted them. Tasting their exotic genomes it had seen potential for new and terrible war beasts.

And so it drew its plans, and it set in motion its trillion trillion bodies towards the consumption of the creatures in red metal, so that their secrets might be plundered, and reemployed in the sating of the hive mind’s endless hunger. This was deliberate, considered, and done in malice.

The hive mind was aware, and it desired vengeance."

• Shield of Baal [Wraithflight]:

"The Dragon was angry, and it was angry with her. Not with the galaxy, or this sector, or her species. But with her personally. The promise of endless torment came from it, her very being enslaved to its ends and used against others, her body rebuilt over and again so that it might suffer the Dragon’s revenge.

Terror of a kind she could not have conceived of flooded her mind. She screamed again, and this time every eldar in the fleet screamed with her."