Definitions must contain the ...

Definitions must contain the means of reaching a decision in a finite number off steps, and existence proofs must be conducted so that the quantity in question can be calculated with any degree of accuracy.
Definitions must contain the means of reaching a decision in a finite number off steps, and existence proofs must be conducted so that the quantity in question can be calculated with any degree of accuracy.
 Leopold Kronecker

More phrases

I'm pretty conservative when it comes to money. My parents were very working class and constantly working. There was always a very strong work ethic and that's put a more conservative, "save for a rainy day" mentality into me.
To reform society, and with it humanity, there is only one mean; to transform the mentality of men, to direct them ("les orienter", Fr.) in a new spirit.
 African Spir
Random, meaningless groups can adopt an us-versus-them mentality.
 Alexandra Robbins
The kind of group mentality that we had lived under since the Second World War is starting to erupt, and the craving for individualism is now much stronger. It's not as taboo anymore, as it was when I was younger.
 Nicolas Winding Refn
I mean, I grew up an athlete training and training and training. So I kind of have that mentality.
 Scott Speedman

Quotes from the same author

Analysis does not owe its really significant successes of the last century to any mysterious use of sqrt(-1), but to the quite natural circumstances that one has infinitely more freedom of mathematical movement if he lets quantities vary in a plane instead of only on a line.
 Leopold Kronecker