Emotions Stock Photos: smart man With beard

Involved in thoughts mature professor bitting eyeglasses
New generations should learn from this
Serious mature professor adjusting glasses and seems like not understanding something
Serious looking old professor standing with his hands folded
Laughing mature professor standing with his hands folded and eyeglasses off
I need a piece of advice about managing this device
Serious looking mature professor holding book on his head
Old professor holding tablet with one hand
Pensive mature man bitting his eyeglasses
Excited old professor holding book and pointing on it
Laughing old professor holding small blackboard
This science decision is not my thing
Smiling old professor holding a book with hands spread
I have some problems with understanding that
Would you take a closer look on this spot?
Mature professor looking confused
Old professor holding globus and looking hugely distured with something
Old professor holding globus and pointing on it
Surprised old professor holding globus and pointing on it
Well, and what do you think about this thing?
Well, and what we're gonna do about that?
Old professor touching his beard and reading a book attentively
Stunned mature professor adjusting his eyeglasses
Information in this book just blows me away
Old professor holding booka and looking confused
Old professor hugging globus
Laughing old professor with his eyeglasses on his head
mature professor looking lost and mad
Laughing mature professor holding his glasses
Old professor holding a book and seems like talking to someone
Old professor holding his hands folded and globus on his hand
Mature professor adjusting his eyeglasses
Oh, how could you say it, it's my favorite book
Balancing with amount of knowledge
Serious looking mature professor standing with hands folded
Old professor holding book and looks surprised
Mature man pointing up and looks like explaining something
Ok, and now tell me what's this?
Guess, i need some advice on that
Serious looking old professor with eyeglasses on head and hands folded
Quite contented with work result
Excited mature professor adjusting eyeglasses
Mature professor laughing hard about something
Mature man adjusting his eyglasses and looking lost
Mature professor seems to don't understand something
Old professor holding globus and seems bothered with something
This subject needs a serious consideration
Old professor holding globus and looking aside
Old professor standing with his ahnds folded and eyes closed
Feeling quite serious when thinking about science
Old professor seems like saying something and holding a tablet
Oh, i didn't see it coming
Thinking about all these work things
Old professor looking at globus and seems not understanding something
Trying to teach students some geography
Old professor hugging globus
Smiling mature professor standing with his hands folded
When science work's been just great
Severe looking old professor holding globus and pointing something
Surprised looking old professor holding a book