That man is guilty of impertinence who considers not the circumstances of time, or engrosses the conversation, or makes himself the subject of his discourse, or pays no regard to the company he is in.

The study and knowledge of the universe would somehow be lame and defective were no practical results to follow.

There is a certain virtue in every good man, which night and day stirs up the mind with the stimulus of glory, and reminds it that all mention of our name will not cease at the same time with our lives, but that our fame will endure to all posterity.

If only every man would make proper use of his strength and do his utmost, he need never regret his limited ability.

The more virtuous any man is, the less easily does he suspect others to be vicious.

Through doubt we arrive at the truth.

In this statement, my Scipio, I build on your own admirable definition, that there can be no community, properly so called, unless it be regulated by a combination of rights. And by this definition it appears that a multitude of men may be just as tyrannical as a single despot and indeed this is the most odious of all tyrannies, since no monster can be more barbarous than the mob, which assumes the name and mask of the people.