All a man can betray is his conscience.

Youth is insolent; it is its right - its necessity; it has got to assert itself, and all assertion in this world of doubts is a defiance, is an insolence.

What is a novel if not a conviction of our fellow men's existence strong enough to take upon itself a form of imagined life clearer than reality and whose accumulated verisimilitude of selected episodes puts to shame the pride of documentary history.

Never test another man by your own weakness.

The question is not how to get cured, but how to live.

And this also," said Marlow suddenly, "has been one of the dark places of the earth.

He who wants to persuade should put his trust not in the right argument, but in the right word. The power of sound has always been greater than the power of sense.