In a statement sent to Quartz by a Facebook spokesperson, CTO Mike Schroepfer said that Dugan built an “amazing team” that “will feel the positive impact of her work for years to come.”

Dugan said that people in the tech industry have “greater responsibilities than ever before,” and that “the timing feels right to step away and be purposeful about what’s next, thoughtful about new ways to contribute in times of disruption.”

Here’s her post announcing the resignation, in which she quotes John F. Kennedy:

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