A few years ago Peter Darnell was approached by a student from one of the high schools where the club had been running our worklife program to help the students transition to work. This lad stopped Peter to say thank you for Peters talk to his class and it helped him become "more professional". I mention this because we had another situation of people influencing others perhaps without realising it. 
 
In this case it was our very own David Woodrow. David's ears picked up when the students who went on the Conoco Phillips Science experience mentioned Professor Brendon Jones, an academic at UQ, who was a great inspiration to them. "I taught Brendon physics when I was science master at St Peter's College". said Dave.....so there you are, obviously Brendon was so taken by Dave's physics teaching enthusiasm that he went to from a high school student to science Professorship. 
 
The moral of these stories is that you never know what effect you're having on others...so take every opportunity to make sure you're impact is a positive one.