Free imagination is the inestimable prerogative of youth and it must be cherished and guarded as a treasure.

Free imagination is the inestimable prerogative of youth and it must be cherished and guarded as a treasure.

自由想象是年轻人不可估量的特权，必须把它当作珍宝加以珍惜和保护。

-- Felix Bloch 费利克斯·布洛赫