The co-winner of this year's Nobel Prize in Physiology or Medicine, Japanese scientist Tasuku Honjo, has given a speech at the Swedish parliament.
Honjo was invited to speak on Tuesday, a day after he attended an award ceremony and a banquet.
He shares the prize with US scientist James Allison for their work that led to a revolutionary cancer therapy.
Honjo said scientists have very limited knowledge about biology and never know where the most important questions or solutions exist. He called on money to be put "here and there".
He will attend a banquet at the royal palace hosted by Swedish King Carl XVI Gustaf before returning to Japan.