Great comment! All 3 are good suggestions. The first one is saying: the greatest teachers, people, thinkers of all times and places are patiently waiting, now, ready to teach you in books.

From Ruskin's Sesame and Lilies (1865):

...a book is written, not to multiply the voice merely, not to carry it merely, but to perpetuate it. The author has something to say which he perceives to be true and useful, or helpfully beautiful. So far as he knows, no one has yet said it; so far as he knows, no one else can say it. He is bound to say it, clearly and melodiously if he may; clearly at all events. In the sum of his life he finds this to be the thing, or group of things, manifest to him;—this, the piece of true knowledge, or sight, which his share of sunshine and earth has permitted him to seize. He would fain set it down for ever; engrave it on rock, if he could; saying, "This is the best of me; for the rest, I ate, and drank, and slept, loved, and hated, like another; my life was as the vapour, and is not; but this I saw and knew: this, if anything of mine, is worth your memory." That is his "writing;" it is, in his small human way, and with whatever degree of true inspiration is in him, his inscription, or scripture. That is a "Book."

Perhaps you think no books were ever so written?

But, again, I ask you, do you at all believe in honesty, or at all in kindness, or do you think there is never any honesty or benevolence in wise people? None of us, I hope, are so unhappy as to think that. Well, whatever bit of a wise man's work is honestly and benevolently done, that bit is his book or his piece of art. It is mixed always with evil fragments—ill-done, redundant, affected work. But if you read rightly, you will easily discover the true bits, and those are the book.

Now books of this kind have been written in all ages by their greatest men:- by great readers, great statesmen, and great thinkers. These are all at your choice; and Life is short. You have heard as much before;—yet have you measured and mapped out this short life and its possibilities? Do you know, if you read this, that you cannot read that—that what you lose to-day you cannot gain to-morrow? Will you go and gossip with your housemaid, or your stable-boy, when you may talk with queens and kings; or flatter yourself that it is with any worthy consciousness of your own claims to respect, that you jostle with the hungry and common crowd for entree here, and audience there, when all the while this eternal court is open to you, with its society, wide as the world, multitudinous as its days, the chosen, and the mighty, of every place and time? Into that you may enter always; in that you may take fellowship and rank according to your wish; from that, once entered into it, you can never be outcast but by your own fault; by your aristocracy of companionship there, your own inherent aristocracy will be assuredly tested, and the motives with which you strive to take high place in the society of the living, measured, as to all the truth and sincerity that are in them, by the place you desire to take in this company of the Dead.

"The place you desire," and the place you fit yourself for, I must also say; because, observe, this court of the past differs from all living aristocracy in this:- it is open to labour and to merit, but to nothing else. No wealth will bribe, no name overawe, no artifice deceive, the guardian of those Elysian gates. In the deep sense, no vile or vulgar person ever enters there. At the [gates], there is but brief question:- "Do you deserve to enter? Pass. Do you ask to be the companion of nobles? Make yourself noble, and you shall be. Do you long for the conversation of the wise? Learn to understand it, and you shall hear it. But on other terms?—no. If you will not rise to us, we cannot stoop to you. The living lord may assume courtesy, the living philosopher explain his thought to you with considerate pain; but here we neither feign nor interpret; you must rise to the level of our thoughts if you would be gladdened by them, and share our feelings, if you would recognise our presence."

This, then, is what you have to do, and I admit that it is much. You must, in a word, love these people, if you are to be among them. No ambition is of any use. They scorn your ambition. You must love them...