Fools and wise men are equally harmless. It is the half-fools and half-wise that are dangerous.

Self knowledge is best learned not by contemplation, but by action.

As all Nature's thousands changes But one changeless God proclaim; So in Art's wide kingdom ranges One sole meaning still the same: This is Truth, eternal Reason, Which from Beauty takes its dress, And serene through time and season Stands aye in loveliness.

Energy is the basis of everything. Every Jew, no matter how insignificant, is engaged in some decisive and immediate pursuit of a goal... It is the most perpetual people of the earth.

What we don't understand we don't possess.

The useful may be trusted to further itself, for many produce it and no one can do without it; but the beautiful must be specially encouraged, for few can present it, while yet all have need of it.

Beware of dissipating your powers; strive constantly to concentrate them.