The best-informed man is not ...

The best-informed man is not necessarily the wisest. Indeed there is a danger that precisely in the multiplicity of his knowledge he will lose sight of what is essential. But on the other hand, knowledge of an apparently trivial detail quite often makes it possible to see into the depth of things. And so the wise man will seek to acquire the best possible knowledge about events, but always without becoming dependent upon this knowledge. To recognize the significant in the factual is wisdom.
The best-informed man is not necessarily the wisest. Indeed there is a danger that precisely in the multiplicity of his knowledge he will lose sight of what is essential. But on the other hand, knowledge of an apparently trivial detail quite often makes it possible to see into the depth of things. And so the wise man will seek to acquire the best possible knowledge about events, but always without becoming dependent upon this knowledge. To recognize the significant in the factual is wisdom.
 Dietrich Bonhoeffer

Quotes from the same author

The first call which every Christian experiences is the call to abandon the attachments of this world.
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 Dietrich Bonhoeffer
Nothing can be more cruel than the leniency which abandons others to their sin. Nothing can be more compassionate than the severe reprimand which calls another Christian in one’s community back from the path of sin.
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 Dietrich Bonhoeffer
The essence of optimism is that it takes no account of the present, but it is a source of inspiration, of vitality and hope where others have resigned; it enables a man to hold his head high, to claim the future for himself and not to abandon it to his enemy.
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 Dietrich Bonhoeffer
Destruction of the embryo in the mother's womb is a violation of the right to live which God has bestowed upon this nascent life.
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 Dietrich Bonhoeffer
Whenever the Psalter is abandoned, an incomparable treasure is lost to the Christian church. With its recovery will come unexpected power.
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 Dietrich Bonhoeffer