“What one has, one ought to use; and whatever he does, he should do with all his might.”
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Marcus Tullius Cicero 180
Roman philosopher and statesman -106–-43 BCRelated quotes

We can quite well turn away from our true destiny, but only to fall a prisoner in the deeper dungeons of our destiny. … Theoretic truths not only are disputable, but their whole meaning and force lie in their being disputed, they spring from discussion. They live as long as they are discussed, and they are made exclusively for discussion. But destiny — what from a vital point of view one has to be or has not to be — is not discussed, it is either accepted or rejected. If we accept it, we are genuine; if not, we are the negation, the falsification of ourselves. Destiny does not consist in what we feel we should like to do; rather is it recognised in its clear features in the consciousness that we must do what we do not feel like doing.
Source: The Revolt of the Masses (1929), Chapter XI: The Self-Satisfied Age

"Self-Portrait" (1936), p. 5 http://books.google.com/books?id=Q1UxYzuI2oQC&lpg=PP1&pg=PA5#v=onepage&q&f=false
1950s, Out of My Later Years (1950)

As quoted in Women's Political & Social Thought: An Anthology, p. 112. Editors Hilda L. Smith, Berenice A. Carroll. Editorial Indiana University Press, 2000. ISBN 0253337585.

Reported by Brand Blanshard in 'Francis Herbert Bradley', Journal of Philosophy (1925).