The senses are of the earth, the reason stands apart from them in contemplation.

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.

The first object of the painter is to make a flat plane appear as a body in relief and projecting from that plane

I have from an early age abjured the use of meat, and the time will come when men such as I will look upon the murder of animals as they now look upon the murder of men.

For once you have tasted flight you will walk the earth with your eyes turned skywards, for there you have been and there you will long to return.

The eye - which sees all objects reversed - retains the images for some time.

It had long since come to my attention that people of accomplishment rarely sat back and let things happen to them. They went out and happened to things.