People get into the habit of entrusting the things they desire to wishful thinking, and subjecting things they don't desire to exhaustive thinking

The whole earth is the sepulchre of famous men.

Ignorance is bold and knowledge reserved.

With reference to the narrative of events, far from permitting myself to derive it from the first source that came to hand, I did not even trust my own impressions, but it rests partly on what I saw myself, partly on what others saw for me, the accuracy of the report always being tried by the most severe and detailed tests possible. My conclusions have cost me some labour from the want of coincidence between accounts of the same occurrences by different eye-witnesses, arising sometimes from imperfect memory, sometimes from undue partiality for one side or the other.

... Athenians are addicted to innovation. They are daring beyond their judgment they toil on with little opportunity for enjoying, being ever engaged in getting, they were born into the world to take no rest themselves, and to give none to others.

I could have wished that the reputations of many brave men were not to be imperilled in the mouth of a single individual, to stand or fall according as he spoke well or ill. For it is hard to speak properly upon a subject where it is even difficult to convince your hearers that you are speaking the truth.

We must remember that one man is much the same as another, and that he is best who is trained in the severest school.