now I remember.

What for, though?
And what put the idea of going to Razumihin into my head just now?
That's curious." He wondered at himself.

Razumihin was one of his old comrades at the university.

It was remarkable that Raskolnikov had hardly any friends at the university; he kept aloof from everyone, went to see no one, and did not welcome anyone who came to see him, and indeed everyone soon gave him up.

He took no part in the students' gatherings, amusements or conversations.