unsociable; these are the signs which distinguish even in youth the philosophical nature from the unphilosophical.

True.

There is another point which should be remarked.

What point?

Whether he has or has not a pleasure in learning; for no one will love that which gives him pain, and in which after much toil he makes little progress.

Certainly not.

And again, if he is forgetful and retains nothing of what he learns, will he not be an empty vessel?

That is certain.

Labouring in vain, he must end in hating himself and his fruitless occupation? Yes.