In general, the men of lower ...

In general, the men of lower intelligence won out. Afraid of their own shortcomings and of the intelligence of their opponents, so that they would not lose out in reasoned argument or be taken by surprise by their quick-witted opponents, they boldly moved into action. Their enemies,on the contrary, contemptuous and confident in their ability to anticipate, thought there was no need to take by action what they could win by their brains.
 Thucydides

Quotes from the same author

For men naturally despise those who court them, but respect those who do not give way to them.
 Thucydides
For men can endure to hear others praised only so long as they can severally persuade themselves of their own ability to equal the actions recounted: when this point is passed, envy comes in and with it incredulity.
 Thucydides
The bravest are surely those who have the clearest vision of what is before them, glory and danger alike, and yet notwithstanding go out to meet it.
 Thucydides
The absence of romance from my history will, I fear, detract somewhat from its interest; but if it be judged useful by those inquirers who desire an exact knowledge of the past as an aid to the interpretation of the future, which in the course of human things must resemble if it does not reflect it, I shall be content. In fine, I have written my work, not as an essay which is to win the applause of the moment, but as a possession for all time.
 Thucydides
Abstinence from all injustice to other first-rate powers is a greater tower of strength than anything that can be gained by the sacrifice of permanent tranquillity for an apparent temporary advantage.
 Thucydides