Bjerknes was dignified in manner, in appearance and in his presentation of his scientific work, but with his dignity he combined a certain modesty and an enthusiasm which both attracted and stimulated younger men.
Bjerknes ay marangal sa paraan, sa hitsura at sa kanyang mga pagtatanghal ng kanyang pang-agham sa trabaho, ngunit sa kanyang karangalan siya pinagsama ng isang ilang pangingimi at isang sigasig na pareho attracted at stimulated batang lalaki.