Whoever sets out to persuade men to accept a new idea, or one which seems to be new, not just as an idea, but as a truth that is felt, should know beforehand that the human mind is not a blank sheet, on which one an write with ease, and should not therefore grieve or despair when he finds that people do not pay attention to him.
You would hardly appreciate the comic if you felt yourself isolated from others. Laughter appears to stand in need of an echo. Listen to it carefully: it is not an articulate, clear, well-defined sound; it is something which would fain be prolonged by reverberating from one to another, something beginning with a crash, to continue in successive rumblings, like thunder in a mountain. still, this reverberation cannot go on for ever. It can travel within as wide a circle as you please: the circle remains, none the less, a closed one.
Illusion and self-deception stand in the way of an honest, penetrating and fearless self-appraisal. Though it would appear that we have access to the innermost core of our individual being, and that there is nothing in the world with which we are on more intimate terms than our own self, the self remains an elusive object of knowledge and understanding.
Desire for knowledge is the path of honor: desire for wealth is the path of dishonor. Wealth is the chain that slaves wear; knowledge the kingly crown.
Just as a tested and rugged virtue of the moral hero is worth more than the lovely, tender, untried innocence of the child, so is the massive strength of a soul that has conquered truth for itself worth more than the soft peach-bloom faith of a soul that takes truth on trust.
For truth there is no deadline.
Through zeal knowledge is gotten, through lack of zeal knowledge is lost; let a man who knows this double path of gain and loss thus place himself that knowledge may grow.