"The only way to refute priests and religions is this: to show that their errors have ceased to be beneficial- that they rather do harm; in short, that their own 'proof of power' no longer holds good-."
"The Kingdom of Heaven is a condition of the heart (-it is said of children 'for theirs is the kingdom of Heaven'): Not something 'above the earth'. The Kingdom of God does not 'come' chronologically-historically, on a certain day in the calendar, something that might be here one day but not the day before: It is an 'inward change in the individual', something that comes at every moment and at every moment has not yet arrived-."
"-The church is precisely that against which Jesus preached- and against which he taught his discipiles to fight-."
"Philosophy is an art of living."
"It is not the victory of science that distinguishes our nineteenth century, but the victory of scientific method over science."
"Profound aversion to reposing once and for all in any one total view of the world. Fascination of the opposing point of view: refusal to be deprived of the simulus of the enigmatic."
"Tremendous self-examination: becoming conscious of oneself, not as individuals, but as mankind. Let us reflect, let us think back; let us follow the highways and byways!"
"The great man is necessarily a skeptic (which is not to say that he has to appear to be one), provided that greatness consists in this: to will something great and the means to it."
"One recognizes the superiority of the Greek man and the Renaissance man- but one would like to have them without the causes and conditions that made them possible.