“The goal of mankind is knowledge.... Now this knowledge is inherent in man. No knowledge comes from outside: it is all inside. What we say a man "knows," should, in strict psychological language, be what he "discovers" or "unveils"; what man "learns" is really what he discovers by taking the cover off his own soul, which is a mine of infinite knowledge.”

Source: Intuitions and Summaries of Thought (1862), Volume II, p. 24.

p, 125
Man a Machine (1747)

§ I
1910s, At the Feet of the Master (1911)
Context: In all the world there are only two kinds of people — those who know, and those who do not know; and this knowledge is the thing which matters. What religion a man holds, to what race he belongs — these things are not important; the really important thing is this knowledge — the knowledge of God's plan for men. For God has a plan, and that plan is evolution. When once a man has seen that and really knows it, he cannot help working for it and making himself one with it, because it is so glorious, so beautiful. So, because he knows, he is on God's side, standing for good and resisting evil, working for evolution and not for selfishness.
If he is on God's side he is one of us, and it does not matter in the least whether he calls himself a Hindu or a Buddhist, a Christian or a Muhammadan, whether he is an Indian or an Englishman, a Chinaman or a Russian. Those who are on His side know why they are here and what they should do, and they are trying to do it; all the others do not yet know what they should do, and so they often act foolishly, and try to invent ways for themselves which they think will be pleasant for themselves, not understanding that all are one, and that therefore only what the One wills can ever be really pleasant for any one. They are following the unreal instead of the real. Until they learn to distinguish between these two, they have not ranged themselves on God's side, and so this discrimination is the first step.
But even when the choice is made, you must still remember that of the real and the unreal there are many varieties; and discrimination must still be made between the right and the wrong, the important and the unimportant, the useful and the useless, the true and the false, the selfish and the unselfish.

Es giebt keine Selbstkenntniss als die historische. Niemand weiss was er ist, wer nicht weiss was seine Genossen sind.

“Ideas,” Lucinde and the Fragments, P. Firchow, trans. (1991), § 139

Source: Death in the Afternoon (1932), Ch. 10

Jämmerlich ist freilich jene praktische Philosophie der Franzosen und Engländer, von denen man meint, sie wüßten so gut, was der Mensch sei, unerachtet sie nicht darüber spekulierten, was er sein solle.
Cited in Lucinde and the Fragments, P. Firchow, trans. (1991), "Athenaeum Fragments" (1798), § 355.

Knowing Yourself: The True in the False (1996)
Context: You think: you become that thought. And consciousness, or the state of pure awareness, is lost. The highest knowledge man can possess is that which is true in his own experience. If his experience is limited, so is his knowledge and he behaves accordingly.

Knowing Yourself: The True in the False (1996)