His mind, though constructive, was not, having regard to its general power, either fertile or versatile. Like most of those who prefer solitary musings to the commerce of men, he had little facility, and found it hard to express his thoughts in any other words than those into which his musings had first flowed. Thus even his oral teaching was not easy to follow. An anecdote was current how when one day he had been explaining to a small class his theory of the origin of our ideas, the class listened in rapt attention to his forcible rhetoric, admiring each sentence as it fell, and thinking that all their difficulties were being removed. When he ended they expressed their gratitude for the pleasure he had given them, and were quitting the room, when one, halting at the door, said timidly, "But, Mr. Green, what did you say was really the origin of our ideas?" However, whether they were or were not capable of assimilating his doctrines, his pupils all joined in their respect for him. They felt the loftiness of his character, they recognised the fervour of his belief. He was the most powerful ethical influence, and perhaps also the most stimulative intellectual influence, that in those years played upon the minds of the ablest youth of the University. But it was a singular fact, which those who have never lived in Oxford or Cambridge may find it hard to understand, that when he rose from the post of a college tutor to that of a University professor, his influence declined, not that his powers or his earnestness waned, but because as a professor he had fewer auditors and less personal relation with them than he had commanded as a college teacher. Such is the working of the collegiate system in Oxford, curiously unfortunate when it deprives the ablest men, as they rise naturally to the highest positions, of the opportunities for usefulness they had previously enjoyed.