Aristotle regarded Socrates to be the founder of Ethics because he took up the unfinished problem of the Skeptics and the Sophists. Upon the death of Socrates, a number of schools arose, each professing to expound his teaching. Behold the great Socratic discovery through which philosophy finds its road and later arrives at the greater systems which the human mind has been able to construct. For Socrates the concept is that of which all think when they speak of a thing. In the rational part of every man there exist some notions which are common to all and hence enjoy universality and necessity, and which form the substratum of true understanding and knowledge.
True science consists in understanding through concepts.
Everyone wishes to be happy. After the death of Socrates, his disciples opened schools with the intention of continuing the teaching of their master. But with the exception of Plato, who represents the Major School of Socrates, the others did not succeed in grasping the meaning of the Socratic concept. Hence these are called Minor Socratic Schools. This school was founded by Euclides, a disciple of Socrates and an Eleatic.