“All too willingly man sees himself as the centre of the universe, as something not belonging to the rest of nature but standing apart as a different and higher being. Many people cling to this error and remain deaf to the wisest command ever given by a sage, the famous "Know thyself" inscribed in the temple of Delphi.”
Ch. XII : On the Virtue of Scientific Humility http://www.marxists.org/reference/subject/philosophy/works/ge/lorenz.htm
On Aggression (1963)
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Konrad Lorenz 17
Austrian zoologist, winner of the Nobel Prize in Physiology… 1903–1989Related quotes

Introductio ad prudentiam: Part II (1727)

Source: Essays and Addresses, Vol. III- Evolution and Occultism (1913)

Napoleon : In His Own Words (1916)
“Socrates’ words, “Know thyself” remain for all those who seek true knowledge and being.”
All and Everything: Views from the Real World (1973)
Context: There do exist enquiring minds, which long for the truth of the heart, seek it, strive to solve the problems set by life, try to penetrate to the essence of things and phenomena and to penetrate into themselves. If a man reasons and thinks soundly, no matter which path he follows in solving these problems, he must inevitably arrive back at himself, and begin with the solution of the problem of what he is himself and what his place is in the world around him. For without this knowledge, he will have no focal point in his search. Socrates’ words, “Know thyself” remain for all those who seek true knowledge and being.

“Man know thyself; then thou shalt know the Universe and God.”
As quoted in Fragments of Reality: Daily Entries of Lived Life (2006) by Peter Cajander, p. 109

Source: Dictionary of Burning Words of Brilliant Writers (1895), P. 620.