The weight of the past is heavier than the future.

The very shaping of history now outpaces the ability of men to orient themselves in accordance with cherished values. And which values? Even when they do not panic, men often sense that older ways of feeling and thinking have collapsed and that newer beginnings are ambiguous to the point of moral stasis.

化学是在分子水平上操纵物质的艺术，而催化是其最强大的画笔。