Bishwo Shahitto Kendro (BSK) celebrated its 40th founding anniversary yesterday through holding various programmes in its building. Professor Abdullah Abu Sayeed founded the institution with the motto 'We want enlightened humans'. In the last 40 years, BSK has developed a base of at least one crore readers. It has also been organising a regular study circle, called Alor Ishkool. Anyone above 18 can be a member of this circle and attend lectures on a wide range of topics -- world literature, classical and contemporary philosophy, poetry, cinema, photography, art appreciation -- while enjoying different kinds of cultural performances.