Never regard study as a duty, but as the enviable opportunity to learn
A thought that sometimes makes me hazy: Am I - or are the others crazy?
A theory can be proved by experiment; but no path leads from experiment to the birth of a theory.
The height of stupidity is most clearly demonstrated by the individual who ridicules something he knows nothing about.
Failure is success in progress
In matters of truth and justice, there is no difference between large and small problems, for issues concerning the treatment of people are all the same.