Stock Photos: smart old slim

Involved in thoughts mature professor bitting eyeglasses
I like to stay on top of things, you know
Mature professor adjusting his eyeglasses
Oh, how could you say it, it's my favorite book
Balancing with amount of knowledge
Laughing mature professor standing with his hands folded and eyeglasses off
I need a piece of advice about managing this device
Old professor standing at th table and looking attentively on digital tablet
Serious looking mature professor holding book on his head
Old professor holding tablet with one hand
Well, are you ready to start your learning process?
Guess, i need some advice on that
Old professor holding digital tablet and seems like saying something
Laughing old professor holding small blackboard
This science decision is not my thing
Old professor standing next to whiteboard and explaining something
Learning all these modern technologies
This digital device is quite a thing
Old professor holding small blackboard
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
Old professor showing a tablet
Oh, i didn't see it coming
Old professor holding his hands folded and globus on his hand
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
Old professor sitting in profile and using tablet
Serious looking mature professor standing with hands folded
Old professor standing next to whiteboard and explaining something
Old professor holding book and looks surprised
Mature man pointing up and looks like explaining something
Ok, and now tell me what's this?
Pensive mature man bitting his eyeglasses
Excited old professor holding book and pointing on it
Serious looking old professor with eyeglasses on head and hands folded
Quite contented with work result
Excited mature professor adjusting eyeglasses
Hm, should i read more books or news already?
Getting more familiar with new device
Smiling old professor holding a book with hands spread
Who's ready to start study time?
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?
It's so easy, how can you don't get it?
Old professor touching his beard and reading a book attentively
Ok, fellas, now it's time to remember few things