Knowledge
Young girl wearing swim suit fishing in creek during summer
Rear view of man playing flute
Cropped hand of woman holding crystal ball on field against sky
Cheerful girl listening music while standing against lake
Close up hand holding snail
Portrait of a young woman by the sea in a hat at sunset
Midsection of woman with book standing by railing
Close-up of hand holding light bulb against sky during sunset
Midsection of woman with books sitting on sofa at home
Man sitting in library
Midsection of woman reading book on paper
Window of a building shell with blue sky
Professor using digital tablet while walking in corridor at university
Cropped hand holding illuminated light bulb at night
Cropped hand of woman reading book at office
Midsection of man playing saxophone
Boy standing on beach against sky
Girl using tablet in city
Young woman standing against bookshelf in library
Midsection of father with son standing on bed at home
Optical illusion of man licking sun at sunset
Portrait of young woman looking away while standing on field
Woman sitting reading books
Girl with globe on the beach
High angle view man in graduation gown standing on building terrace
Cupcakes and pumpkin on table during halloween celebration
Midsection of woman writing in book on table
Rear view of woman standing by lake
Woman using mobile phone outdoors
Smiling businesswomen working at desk in office
Midsection of person writing on book
Side view of boy playing piano at home
Midsection of person playing piano
Midsection of woman with arms raised
Optical illusion woman holding sun at sunset
Teenage student girl walking in city during autumn
Smiling female teacher shaking hands with student in classroom
Dad and daughters show class. dad and children build a tower of fingers
Rear view of woman wearing hood reading book on field
Rear view of people in seminar
Rear view of woman looking at sea shore
Teenagers looking female classmates embracing on steps at high school
Male and female technicians working at workshop
Midsection of girl wearing dress while playing piano
Businesswomen discussing while sitting at desk in office
High angle view of chairs at restaurant
Close-up of mother and son on street
Cropped hand of baby playing piano
Hands of a child playing
Female student making notes at home
Front view of person holding red book in hand
Baby boy by mother playing with toy car
Girl drawing on slate while sitting in darkroom at home
Full frame shot of empty seats
Midsection of woman writing with fountain pen
Asian woman relax and reading on white stair in flower garden on springtime vacation
Portrait of cute baby
Teenage girl playing piano while sitting at home
Young woman posing
Rear view of girl learning mathematics on blackboard
Midsection of girl drawing on road
Parted books next to each other top view. background from multicolored old books.
Serious woman crouching on green meadow
Hand of person amidst white smoke
High angle view of woman playing in swimming pool
Serious female fortune teller reading tarot cards while sitting on roof of old building
High angle view of students playing on tiled floor
Cute boy looking away while relaxing on bed
Midsection of woman holding bouquet
Full frame shot of books in shelves
Toddler baby boy in funny bunny hat playing with toy car
High angle view of multi-ethnic female students preparing science project at desk in high school classroom
Blurred motion of person reaching sky
Landscape of natural wild nature in morning sunlight. perfect nature at dawn.
Entrepreneurs attending training class in conference centre at office
Close-up of boy making sketch on note pad at table
Mother pointing away while standing with daughter outdoors
Close-up of man holding guitar while using laptop indoors
Mother carrying toddler sitting besides son using digital tablet on bed at home
Close-up of hands kindling a fire with natural material
Cute baby girl on bed at home
Rear view of woman photographing sea against sky
Woman and daughter using sanitizer sitting on table
Group of people in auditorium
Man playing chess on table
Full length serious man in graduation gown standing on stairs in building
High angle view of woman reading book while sitting outdoors
Midsection of man holding book against sea during sunset
Side view of young man reading book
Full frame shot of chairs
High angle view of women choosing music record at store
Close-up of stack of table
Rear view of girl with arms outstretched
Close-up of man hands
Midsection of man working on wood
Young woman reading book while listening music on table
Close-up of hand on sign board
Midsection of child playing guitar at home
Close-up of hand against sea
Teacher holding chalk while standing against blackboard in classroom