Don’t mistake your assumptions for the truth.

If you have an idea that you genuinely think is good, don't let some idiot talk you out of it.

Toutes les opinions ne se valent pas, et il ne faut pas confondre l'éloquence d'une parole avec la justesse d'une pensée.

Don’t confuse caution with cowardice.

Never express yourself more clearly than you are able to think.

Don't mistake dramatics for a conscience.

Do not mistake charm for virtue.

Don't mistake politeness for lack of strength.

Above all, do not be so ingenuous as to believe that you will disarm, by methods of persuasion, the Powers who see you strengthening against every eventuality your means of defence, which might turn into means of aggression.

Think not that your word and yours alone must be right.

It is about not taking No just because someone does not like the ideas I bring.

beware of ideas...

You have to be careful not to be too opinionated.

Do not mistake yourself by believing that your being has something in it more exalted than that of others.