Stock Photos: senior With beard

I need to think it over carefully
Pensive santa claus sittting and talking on the phone
Thinking about how to get ready for christmas
Having a lot to talk about
Santa claus seems to be surprised with conversation
Old professor holding his hands folded and globus on his hand
Surprised old professor holding globus and pointing on it
Well, and what do you think about this thing?
Old professor looking at globus and seems not understanding something
Thinking about all these work things
When science work's been just great
Pensive mature man bitting his eyeglasses
Modern and pensive businessman
Pensive aged man holding ipad
Hm, should i read more books or news already?
Well, i don't know if i'm gonna prepare all these presents
Santa clus holding smartphone and looking on it
Well, seems like we have a lot to do before christmas
Surprised santa claus sitting and talking on the phone
Old professor holding globus and pointing on it
Ok, and now tell me what's this?
Would you take a closer look on this spot?
Old professor holding globus and seems bothered with something
Old professor holding globus and looking aside
Laughing mature professor standing with his hands folded and eyeglasses off
Involved in thoughts mature professor bitting eyeglasses
Got pensive a little bit while talking
Aged man holding tablet and standing in profile
This digital device is quite a thing
Guessing what next should i read