ideo-

Words divide, pictures unite.
and
Words are pictures too.

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Ideograms and ideographs convey ideas without explicitly stating them.

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From the Online Etymology Dictionary:

idea
late 14c., "archetype of a thing in the mind of God; Platonic `idea,'" from L. idea "idea," and in Platonic philosophy "archetype," from Gk. idea "ideal prototype," lit. "the look of a thing (as opposed to the reality); form; kind, sort, nature," from idein "to see," from PIE *wid-es-ya-, suffixed form of base *weid- "to see" (see vision). Sense of "result of thinking" first recorded 1640s.

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From V for Vendetta (2006):

But what of the man? I know his name was Guy Fawkes and I know, in 1605, he attempted to blow up the Houses of Parliament. But who was he really? What was he like? We are told to remember the idea, not the man, because a man can fail. He can be caught, he can be killed and forgotten, but 400 years later, an idea can still change the world. I've witnessed first hand the power of ideas, I've seen people kill in the name of them, and die defending them... but you cannot kiss an idea, cannot touch it, or hold it... ideas do not bleed, they do not feel pain, they do not love... And it is not an idea that I miss, it is a man... A man that made me remember the Fifth of November. A man that I will never forget.

and

Beneath this mask there is more than flesh. Beneath this mask there is an idea, Mr. Creedy, and ideas are bulletproof.

From the V for Vendetta graphic novel by Alan Moore and David Lloyd