The only existence we conceive is the existence of sensible things.
The capacity of the human mind for forming and manipulating symbols is what sets us apart from other animals.
I want to run a good race, to run a good time, and to enjoy it.
The highest possible stage in moral culture is when we recognize that we ought to control our thoughts.
To accomplish great things, we must not only act, but also dream; not only plan, but also believe.