C.N. Douglas, comp. Forty Thousand Quotations: Prose and Poetical. 1917.

Self-knowledge

Man, know thyself! all wisdom centres there.

Young.

Go to your bosom, knock there, and ask your heart what it doth know.

Shakespeare.

Marry, sir, they praise me, and make an ass of me; now my foes tell me plainly I am an ass; so that by my foes, sir, I profit in the knowledge of myself.

Shakespeare.

The only thing a man knows is himself.

Alexander Smith.

To know thyself—in others self-concern;
Would’st thou know others? read thyself—and learn!

Schiller.

The most difficult thing in life is to know yourself.

Thales.

That man must daily wiser grow,
Whose search is bent himself to know.

Gay.

Man’s science is the culture of his heart;
And not to lose his plummet in the depths
Of nature, or the more profound of God.

Young.

He that knows himself, knows others; and he that is ignorant of himself could not write a very profound lecture on other men’s heads.

Colton.

You are surprised at your imperfections,—why? I should infer from that, that your self-knowledge is small. Surely you might rather be astonished that you do not fall into more frequent and more grievous faults, and thank God for His upholding grace.

Jean Nicolas Grou.

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