60s
adult
age
aged
book
bookshelf
bookstore
caucasian
college
education
elder
elderly
exam
eyeglasses
face
glasses
happy
holding
indoors
knowledge
learn
library
lifestyle
looking at camera
male
man
mature
old
older
pensioner
people
person
portrait
read
reader
research
retired
retirement
science
senior
sitting
smile
student
study
studying
teacher
thinking
thoughtful
university
working