Friendship is the only thing in the world concerning the usefulness of which all mankind are agreed.
Marcus Tullius CiceroRead
No one can speak well, unless he thoroughly understands his subject.
Interpretation
Effective communication is rooted in a deep understanding of the topic being discussed.
Marcus Tullius Cicero emphasizes the importance of knowledge as a foundation for effective communication. To convey ideas clearly and persuasively, one must possess a thorough understanding of the subject matter, as this depth of knowledge enables speakers to address questions, address different perspectives, and convey confidence, ultimately leading to clearer and more impactful communication.
In practice
During a presentation, one might quote Cicero to emphasize the need for mastering the topic at hand.
Friendship is the only thing in the world concerning the usefulness of which all mankind are agreed.
Those wars are unjust which are undertaken without provocation. For only a war waged for revenge or defence can actually be just.
Orators are most vehement when their cause is weak.
Nothing contributes to the entertainment of the reader more, than the change of times and the vicissitudes of fortune.
No one has the right to be sorry for himself for a misfortune that strikes everyone.
Advice in old age is foolish; for what can be more absurd than to increase our provisions for the road the nearer we approach to our journey's end.
I have just gone over my comet computations again, and it is humiliating to perceive how very little more I know than I did seven years ago when I first did this kind of work.
For scholarship - if it is to be scholarship - requires, in addition to liberty, that the truth take precedence over all sectarian interests, including self-interest.
Never use a metaphor, simile, or other figure of speech which you are used to seeing in print. Never use a long word where a short one will do. If it is possible to cut a word out always cut it out. Never use the passive voice where you can use the active. Never use a foreign phrase a scientific word or a jargon word if you can think of an everyday English equivalent. Break any of these rules sooner than say anything outright barbarous.
As Olafsson showed me, White can win... It's hard to believe. I stayed up all night analysing, finally convicing myself, and, incidentally, learning a lot about Rook and Pawn endings in the process.
In the '70s and '80s there was an attempt in K-12 to teach science through art or art through science. The challenge today is how do you build the ethos of art and design into the academy of science.
If you really want to know about the future, don't ask a technologist, a scientist, a physicist. No! Don't ask somebody who's writing code. No, if you want to know what society's going to be like in 20 years, ask a kindergarten teacher.
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