Perhaps that’s what we all had to do — think out for ourselves what we could believe and how we could live by it. And so I came to the conclusion that you had to use this life to develop the very best that you could develop.

Eleanor Roosevelt (1884–1962) American politician, diplomat, activist; First Lady of the US (1933–45)

Essay (1951-12), “This I Believe: Growth that Starts from Thinking,” on Edward R. Murrow, This I Believe, CBS Radio
    (Source)

(Source (Audio); start 1:54). The essay was read without a script. The official transcript gives "what we all must do," but the audio clearly says, "what we all had to do."

Collected in Edward P. Morgan (ed.), This I Believe (1952).