Being willing is not enough. We must do.
Avoid studies of which the result dies with the worker.
People reveal themselves completely only when they are thrown out of the customary conditions of their life.
Just as eating against one's will is injurious to health, so studying without a liking for it spoils the memory, and it retains nothing it takes in.
When you are alone you are all your own.
As every divided kingdom falls, so every mind divided between many studies confounds and saps itself.