Cerebral quotes or proverbs

1.The work of the individual still remains the spark that moves mankind forward.-Igor Sikorsky
2.Ninety-percent of the people in the world are fools,and the rest of us are in great danger of contagion.-Thornton Wilder
3.Today,a young person does not generally go off to university with the expectation of having an intellectual adventure,of discovering strange new worlds,of finding out what the comprehensive truth about man is.This is partly because he already knows,partly because he thinks such truth unavailable.-Allan Bloom
4.The line separating good and evil passes not through states,nor between classes,nor between political parties either,but right through every human heart.-Alexander Solzhenitsyn