Government, even in its best state, is but a necessary evil; in its worst state, an intolerable one.

The child is not a passive recipient of knowledge but an active participant in the learning process.

可持续性不仅仅是植树；它是为了正确的理由在正确的地方种植正确的树木。

The Moving Finger writes; and, having writ, Moves on: nor all thy Piety nor Wit Shall lure it back to cancel half a Line, Nor all thy Tears wash out a Word of it.

Real smart cars should evolve continuously like smartphones.