Perception starts with the eye.

There is nothing strange in the circle being the origin of any and every marvel.

Those who have been eminent in philosophy, politics, poetry, and the arts have all had tendencies toward melancholia.

The greatest of all pleasures is the pleasure of learning.

Where the laws are not supreme, there demagogues spring up.

The good lawgiver should inquire how states and races of men and communities may participate in a good life, and in the happiness which is attainable by them.

There are two distinctive peculiarities by reference to which we characterize the soul (1) local movement and (2) thinking, discriminating, and perceiving. Thinking both speculative and practical is regarded as akin to a form of perceiving; for in the one as well as the other the soul discriminates and is cognizant of something which is.