The important thing about a problem is not its solution, but the strength we gain in finding the solution
Real improvement is of slow growth only.
When once ambition has passed its natural limits, its progress is boundless.
Nothing will ever please me, no matter how excellent or beneficial, if I must retain the knowledge of it to myself. . . . . . No good thing is pleasant to possess, without friends to share it.
Virtue needs a director and guide. Vice can be learned even without a teacher.
Auditur et altera pars. (The other side shall be heard as well.)