© Thoughtful girl with arms crossed sitting on wood at grassy field

© Thoughtful smiling young worker against white background

© Thoughtful woman looking away while traveling in train

© Low angle view of thoughtful woman listening music while standing by window at home

© Close-up of thoughtful teenage boy looking away

© Close-up of woman looking away at street

© Thoughtful businesswoman looking through window while sitting in office

© Thoughtful woman looking through glass window

© Side view of thoughtful man looking through window at home

© Side view of thoughtful woman holding colorful flowers while standing on grassy field at park

© Low angle view of thoughtful woman looking down while sitting against window at home

© High angle view of thoughtful woman looking away while lying on straws

© Thoughtful man looking away while sitting on chair in airport departure area

© Thoughtful woman wearing tiara while standing against bare trees in forest

© Low angle view of thoughtful woman looking away while standing against mountain at park during sunny day

© Portrait of confident thoughtful man with beard standing against black background

© High angle view of thoughtful woman with long hair listening music while lying on grassy field in garden

© Thoughtful woman with long hair listening music while sitting on grassy field in garden

© Close-up of thoughtful woman looking away while standing by weeping willow in park

© Side view of thoughtful woman standing amidst plants on field during sunset

© Thoughtful woman looking away while standing against trees in park during winter

© Side view of thoughtful man sitting in boat on lake against sky at Olympic National Park during sunset

© Thoughtful serious woman wearing tiara while standing against bare trees in forest

© Thoughtful woman listening music while sitting on grassy field against trees in park

© High angle view of thoughtful young woman looking away in forest