Heikki Välisuo: Pohdiskeluja, kirjoitelmia, valokuvia, oppimateriaalia (koodaus, matematiikka, fysiikka), exercices en français.
"It ain’t what you don’t know that gets you into trouble. It’s what you know for sure that just ain’t so." (Mark Twain?)
"Man has a strong confidence in what he believes in, what he hopes for, and in the nobility of the means by which he earns his money"
"The significant problems we face cannot be solved at the same level of thinking we were at when we created them."
