Insofar as he makes use of his healthy senses, man himself is the best and most exact scientific instrument possible. The greatest misfortune of modern physics is that its experiments have been set apart from man, as it were, physics refuses to recognize nature in anything not shown by artificial instruments, and even uses this as a measure of its accomplishments.

Woe to him who would ascribe something like reason to Chance, and make a religion of surrendering to it.

Oh happy he who still can hope in our day to breathe the truth while plunged in seas of error! What we don't know is really what we need, and what we know is of no use to us whatever!

Mannerism always wants to be finished and doesn't enjoy the process. Genuine, truly great talent, however, finds its greatest satisfaction in the production.

Difficulties increase the nearer we get to the goal.

Happy the man who early learns the wide chasm that lies between his wishes and his powers.

The greatest step forward would be to see that everything factual is already theory. The blueness of the sky reveals the basic lawof chromatics. Don't look for anything behind the phenomena, they themselves are the doctrine.