Failure is success in progress

I have tried 99 times and have failed, but on the 100th time came success.

The enormous mental resilience, without which no Chess player can exist, was so much taken up by Chess that he could never free his mind of this game

Every serious scientific worker is painfully conscious of this involuntary relegation to an ever-narrowing sphere of knowledge, which threatens to deprive the investigator of his broad horizon and degrades him to the level of a mechanic.

... the desire for truth must take precedence over all other desires.

Dostoevsky gives me more than any scientist, more than Gauss.

Honestly, I cannot understand what people mean when they talk about the freedom of the human will. I have a feeling, for instance, that I will something or other; but what relation this has with freedom I cannot understand at all. I feel that I will to light my pipe and I do it; but how can I connect this up with the idea of freedom? What is behind the act of willing to light the pipe ? Another act of willing?