Albert Barnes on John 18:34

Of thyself. From any conviction of your own mind, or any apprehension of danger. During all the time in which you have been praetor, have you seen anything in me that has led you to apprehend sedition or danger to the Roman power? This evidently was intended to remind Pilate that nothing was proved against him, and to caution him against being influenced by the malicious accusations of others. Jesus demanded a just trial, and claimed that Pilate should not be influenced by any reports that he might have heard of him.