Adjective
Existing of or by himself,independent of any other being or cause; -- as, God is the only self-existent being.
Source: Webster's dictionaryParties do not maintain themselves. They are maintained by effort. The government is not self-existent. It is maintained by the effort of those who believe in it. The people of America believe in American institutions, the American form of government and the American method of transacting business. Calvin Coolidge
It exists in all creation; it does not fear; it does not hate; it is timeless and universal and self-existent, You will come to know it through seeking knowledge and learning!" Source: Internet
It tells us that the basic components of objects – the particles, electrons, quarks etc. – cannot be thought of as "self-existent". Source: Internet